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{"work":{"id":30343344,"created_at":"2016-12-08T23:54:57.092-08:00","from_world_paper_id":159656649,"updated_at":"2024-11-16T21:39:45.819-08:00","_data":{"grobid_abstract":"CITATIONS 0 READS 21 3 authors: Some of the authors of this publication are also working on these related projects: Turbulent complex flows reconstruction via data assimilation in large eddy models View project TRACKYLEAKS -A new methodology to track and quantify the fugitive biogaz leaks -Application to Anaerobic Digestion plants View project","grobid_abstract_attachment_id":"50796713"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"fr","title":"Incertitudes de mesures PIV par flot optique","broadcastable":true,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [57841091]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; 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class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Incertitudes de mesures PIV par flot optique</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="57841091" href="https://nationalagriculturalresearchinra.academia.edu/DominiqueHeitz"><img alt="Profile image of Dominique Heitz" class="ds-work-card--author-avatar" src="//a.academia-assets.com/images/s65_no_pic.png" />Dominique Heitz</a></div><div class="ds-work-card--detail"><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">7 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 30343344; const worksViewsPath = "/v0/works/views?subdomain_param=api&work_ids%5B%5D=30343344"; const getWorkViews = async (workId) => { const response = await fetch(worksViewsPath); if (!response.ok) { throw new Error('Failed to load work views'); } const data = await response.json(); return data.views[workId]; }; // Get the view count for the work - we send this immediately rather than waiting for // the DOM to load, so it can be available as soon as possible (but without holding up // the backend or other resource requests, because it's a bit expensive and not critical). const viewCount = await getWorkViews(workId); const updateViewCount = (viewCount) => { try { const viewCountNumber = parseInt(viewCount, 10); if (viewCountNumber === 0) { // Remove the whole views element if there are zero views. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); return; } const commaizedViewCount = viewCountNumber.toLocaleString(); const viewCountBody = document.getElementById('work-metadata-view-count'); if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new 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Une techique de PIV stéréoscopique est utilisée pour obtenir les trois composantes des champs de vitesse dans un plan. La composante hors-plan du déplacement est reconstruite grace à une méthode originale basée sur une approximation linéaire autour du plan de mesure. Les profils de vitesse obtenus en régime laminaire sont en très bon accord avec les prédictions théoriques d&#39;Ekman.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Mesures PIV stéréoscopiques en couche d'Ekman turbulente","attachmentId":119414287,"attachmentType":"pdf","work_url":"https://www.academia.edu/125354846/Mesures_PIV_st%C3%A9r%C3%A9oscopiques_en_couche_dEkman_turbulente","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/125354846/Mesures_PIV_st%C3%A9r%C3%A9oscopiques_en_couche_dEkman_turbulente"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="18032466" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/18032466/Estimation_du_flot_optique_par_m%C3%A9thodes_variationnelles">Estimation du flot optique par méthodes variationnelles</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="37970515" href="https://independent.academia.edu/FrancoisxavierRoux">Francois-xavier Roux</a></div><p class="ds-related-work--abstract ds2-5-body-sm">Cette thèse s'inscrit dans le sillage des nombreuses recherches menées autour du problème d'estimation du flot optique. Elle se distingue par le fait d'avoir été menée dans un cadre pluridisciplinaire. Elle traite en effet d'un problème fondamental en traitement d'images (flot optique) auquel ont été appliqué des techniques de calcul scientifique (parallélisation) en visant une application expérimentale de la mécanique des fluides (vélocimétrie par images de particules).</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Estimation du flot optique par méthodes variationnelles","attachmentId":42039531,"attachmentType":"pdf","work_url":"https://www.academia.edu/18032466/Estimation_du_flot_optique_par_m%C3%A9thodes_variationnelles","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/18032466/Estimation_du_flot_optique_par_m%C3%A9thodes_variationnelles"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="30343275" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/30343275/Evaluation_D_Un_Estimateur_De_Flot_Optique_D%C3%A9di%C3%A9_Aux%C3%A9coulements">Evaluation D’Un Estimateur De Flot Optique Dédié Auxécoulements</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="57841091" href="https://nationalagriculturalresearchinra.academia.edu/DominiqueHeitz">Dominique Heitz</a></div><p class="ds-related-work--abstract ds2-5-body-sm">Sujet principal : Flot optique Fluide : Aérodynamique, Méthode de visualisation : Vélocimétrie par Image de Particules, Flot optique.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Evaluation D’Un Estimateur De Flot Optique Dédié Auxécoulements","attachmentId":50796652,"attachmentType":"pdf","work_url":"https://www.academia.edu/30343275/Evaluation_D_Un_Estimateur_De_Flot_Optique_D%C3%A9di%C3%A9_Aux%C3%A9coulements","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/30343275/Evaluation_D_Un_Estimateur_De_Flot_Optique_D%C3%A9di%C3%A9_Aux%C3%A9coulements"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="112780009" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/112780009/Mesures_de_st%C3%A9r%C3%A9o_PIV_dans_une_cuve_agit%C3%A9e">Mesures de stéréo-PIV dans une cuve agitée</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="49681444" href="https://independent.academia.edu/PhilippePlanquart">Philippe Planquart</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2018</p><p class="ds-related-work--abstract ds2-5-body-sm">Les ecoulements en cuve agitee se retrouvent dans de nombreuses applications industrielles comme l’agroalimentaire, le pharmaceutique, ou encore l’industrie chimique. Les ecoulements presents dans ce type d’installation rotative sont largement tridimensionnels et particulierement non symetriques lorsque la cuve est munie de contre pales. La modelisation de ces ecoulements n’est donc pas aisee, et se complexifie d’autant plus lorsque plusieurs phases coexistent dans la cuve.L’objectif de cette etude conjointe entre l’Institut von Karman et le CETIM est de creer une base de don-nees experimentale pour la validation des codes numeriques destines a la simulation d’ecoulements en cuve agitee. Le projet comprend plusieurs etapes qui vont de mesures en ecoulement monophasique, jusqu’a des mesures diphasiques de melange solide – liquide et liquide – gaz. Cette communication traite des resultats experimentaux de la premiere etape qui se focalise sur l’ecoulement purement liquide.L’installati...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Mesures de stéréo-PIV dans une cuve agitée","attachmentId":109905286,"attachmentType":"pdf","work_url":"https://www.academia.edu/112780009/Mesures_de_st%C3%A9r%C3%A9o_PIV_dans_une_cuve_agit%C3%A9e","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/112780009/Mesures_de_st%C3%A9r%C3%A9o_PIV_dans_une_cuve_agit%C3%A9e"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="91157447" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/91157447/Mesures_%CE%BCPIV_Dans_Un_Mod%C3%A8le_De_Milieu_Poreux">Mesures µPIV Dans Un Modèle De Milieu Poreux</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="104582969" href="https://independent.academia.edu/jstefanini">jean stefanini</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2007</p><p class="ds-related-work--abstract ds2-5-body-sm">18 ?me Congr?s Fran?ais de M?canique Grenoble, 27-31 ao?t 2007 Mesures ?PIV dans un mod?le de milieu poreux Yannick KNAPP*, Eric BERTRAND**, Jean STEFANINI*** * Universit? d&#x27;Avignon, UMR CSE, F-84914, Avignon ...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Mesures µPIV Dans Un Modèle De Milieu Poreux","attachmentId":94523910,"attachmentType":"pdf","work_url":"https://www.academia.edu/91157447/Mesures_%CE%BCPIV_Dans_Un_Mod%C3%A8le_De_Milieu_Poreux","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/91157447/Mesures_%CE%BCPIV_Dans_Un_Mod%C3%A8le_De_Milieu_Poreux"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="125354975" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/125354975/Mesures_PIV_stereoscopiques_dans_une_couche_dEkman_turbulente">Mesures PIV stereoscopiques dans une couche d'Ekman turbulente</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="35612947" href="https://independent.academia.edu/joelSommeria">joel Sommeria</a></div><p class="ds-related-work--metadata ds2-5-body-xs">HAL (Le Centre pour la Communication Scientifique Directe), 2007</p><p class="ds-related-work--abstract ds2-5-body-sm">PIV stéréoscopique est utilisée pour obtenir les trois composantes des champs de vitesse dans un plan. La composante hors-plan du déplacement est reconstruite grace à une méthode originale basée sur une approximation linéaire autour du plan de mesure. Les profils de vitesse obtenus en régime laminaire sont en très bon accord avec les prédictions théoriques d'Ekman.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Mesures PIV stereoscopiques dans une couche d'Ekman turbulente","attachmentId":119414254,"attachmentType":"pdf","work_url":"https://www.academia.edu/125354975/Mesures_PIV_stereoscopiques_dans_une_couche_dEkman_turbulente","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/125354975/Mesures_PIV_stereoscopiques_dans_une_couche_dEkman_turbulente"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="73095347" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/73095347/Calcul_du_flot_optique_par_assimilation_variationnelle_de_donn%C3%A9es">Calcul du flot optique par assimilation variationnelle de données</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="205230857" href="https://independent.academia.edu/DominiqueB%C3%A9r%C3%A9ziat">Dominique Béréziat</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2008</p><p class="ds-related-work--abstract ds2-5-body-sm">Nous proposons de resoudre le probleme classique de l&#39;estimation du mouvement dans une sequence d&#39;images en calculant le flot optique. Pour cela, nous utilisons une approche basee sur l&#39;assimilation variationnelle de donnees qui permet de realiser une integration temporelle du calcul du flot optique : les gradients spatiotemporels constituent les observations et sont assimiles dans un modele de transport du flot optique. Cette approche a deux avantages principaux. D&#39;une part elle permet de definir des modeles d&#39;erreurs qui, in fine, peuvent gerer de facon naturelle les donnees manquantes. D&#39;autre part, le schema numerique incremental sur lequel repose l&#39;assimilation variationnelle de donnees permet de resoudre efficacement les systemes non-lineaires. Or, la contrainte du flot optique n&#39;est pas lineaire dans sa forme non differentiee. Notre methode prend donc en charge l&#39;estimation de grands deplacements.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Calcul du flot optique par assimilation variationnelle de données","attachmentId":81751747,"attachmentType":"pdf","work_url":"https://www.academia.edu/73095347/Calcul_du_flot_optique_par_assimilation_variationnelle_de_donn%C3%A9es","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/73095347/Calcul_du_flot_optique_par_assimilation_variationnelle_de_donn%C3%A9es"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="116102233" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/116102233/Pieu_sous_charge_lat%C3%A9rale_cyclique_prise_en_compte_des_incertitudes_sur_les_mesures">Pieu sous charge latérale cyclique : prise en compte des incertitudes sur les mesures</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="294489724" href="https://independent.academia.edu/FredericRosquoet">Frederic Rosquoet</a></div><p class="ds-related-work--abstract ds2-5-body-sm">L&#39;effet des cycles de chargement horizontal en tête de pieu sur l&#39;interaction sol-pieu est étudié sur modèles réduits centrifugés. L&#39;évolution avec le nombre de cycles du déplacement au point d&#39;application de la charge et du moment maximum est analysée avec une interpolation logarithmique en incluant un calcul d&#39;incertitude.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Pieu sous charge latérale cyclique : prise en compte des incertitudes sur les mesures","attachmentId":112325499,"attachmentType":"pdf","work_url":"https://www.academia.edu/116102233/Pieu_sous_charge_lat%C3%A9rale_cyclique_prise_en_compte_des_incertitudes_sur_les_mesures","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/116102233/Pieu_sous_charge_lat%C3%A9rale_cyclique_prise_en_compte_des_incertitudes_sur_les_mesures"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="122885393" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/122885393/Estimations_derreur_pour_un_fluide_viscoplastique_par_%C3%A9l%C3%A9ments_finis_Pk_et_maillages_adapt%C3%A9s">Estimations d'erreur pour un fluide viscoplastique par éléments finis Pk et maillages adaptés</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="308480645" href="https://independent.academia.edu/RichardAguilarMichel">Richard Aguilar Michel</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Comptes Rendus de l'Académie des Sciences - Series I - Mathematics, 2000</p><p class="ds-related-work--abstract ds2-5-body-sm">Nous montrons une estimation a priori de l'erreur en O(h k | ln h|), en utilisant des maillages adaptés et des méthodes d'éléments finis de type P k , lors de l'approximation de l'écoulement d'un fluide de Bingham dans une conduite cylindrique avec adhérence à la paroi. D'autre part, l'utilisation de maillages uniformes conduit à une estimation en O(h), ce qui met en évidence l'intérêt de l'adaptation de maillages. En conclusion, des tests numériques viennent confirmer les résultats annoncés.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Estimations d'erreur pour un fluide viscoplastique par éléments finis Pk et maillages adaptés","attachmentId":117452932,"attachmentType":"pdf","work_url":"https://www.academia.edu/122885393/Estimations_derreur_pour_un_fluide_viscoplastique_par_%C3%A9l%C3%A9ments_finis_Pk_et_maillages_adapt%C3%A9s","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/122885393/Estimations_derreur_pour_un_fluide_viscoplastique_par_%C3%A9l%C3%A9ments_finis_Pk_et_maillages_adapt%C3%A9s"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="121340356" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/121340356/Evaluation_DUn_Estimateur_De_Flot_Optique_D_e_Aux_Ecoulements">Evaluation D'Un Estimateur De Flot Optique D ´ ´ e Aux ´ Ecoulements</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="57841091" href="https://nationalagriculturalresearchinra.academia.edu/DominiqueHeitz">Dominique Heitz</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2005</p><p class="ds-related-work--abstract ds2-5-body-sm">Une méthode de flot optique, dédiée auxécoulements de fluide, est proposée et testée sur des images de type PIV. Des comparaisons qualitatives et quantitatives sont effectuées entre les résultats obtenus avec la méthode de flot optique et ceux fournis par une méthode classique de PIV. Les observations sont faites dans le sillage proche d'un cylindre circulaireà nombre de Reynolds modéré. Il est montré que l'estimateur du mouvement considéré détermine des informations cohérentes avec une résolution spatiale très dense, par comparaison avec la PIV. La validité des résultats obtenus avec les deux approches est discutée.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Evaluation D'Un Estimateur De Flot Optique D ´ ´ e Aux ´ Ecoulements","attachmentId":116245190,"attachmentType":"pdf","work_url":"https://www.academia.edu/121340356/Evaluation_DUn_Estimateur_De_Flot_Optique_D_e_Aux_Ecoulements","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/121340356/Evaluation_DUn_Estimateur_De_Flot_Optique_D_e_Aux_Ecoulements"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":50796713,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":50796713,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_50796713" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="116102238" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/116102238/Pieu_sous_charge_lat%C3%A9rale_cyclique_incertitudes_sur_les_mesures">Pieu sous charge latérale cyclique : incertitudes sur les mesures</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="294489724" href="https://independent.academia.edu/FredericRosquoet">Frederic Rosquoet</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Revue Française de Géotechnique, 2009</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Pieu sous charge latérale cyclique : incertitudes sur les mesures","attachmentId":112325468,"attachmentType":"pdf","work_url":"https://www.academia.edu/116102238/Pieu_sous_charge_lat%C3%A9rale_cyclique_incertitudes_sur_les_mesures","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/116102238/Pieu_sous_charge_lat%C3%A9rale_cyclique_incertitudes_sur_les_mesures"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="1" data-entity-id="30343351" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/30343351/Collaboration_corr%C3%A9lation_m%C3%A9thode_variationnelle_pour_une_estimation_robuste_du_flot_optique">Collaboration corrélation–méthode variationnelle pour une estimation robuste du flot optique</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="57841091" href="https://nationalagriculturalresearchinra.academia.edu/DominiqueHeitz">Dominique Heitz</a></div><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Collaboration corrélation–méthode variationnelle pour une estimation robuste du flot optique","attachmentId":50796720,"attachmentType":"pdf","work_url":"https://www.academia.edu/30343351/Collaboration_corr%C3%A9lation_m%C3%A9thode_variationnelle_pour_une_estimation_robuste_du_flot_optique","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/30343351/Collaboration_corr%C3%A9lation_m%C3%A9thode_variationnelle_pour_une_estimation_robuste_du_flot_optique"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="2" data-entity-id="93604718" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/93604718/Erreurs_de_mesure_et_%C3%A9pid%C3%A9miologie">Erreurs de mesure et épidémiologie</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="37825927" href="https://umontreal.academia.edu/MBigraspoulin">M. 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