{"id":460,"date":"2020-03-10T21:38:17","date_gmt":"2020-03-11T01:38:17","guid":{"rendered":"http:\/\/fgosselin.meca.polymtl.ca\/?p=460"},"modified":"2020-05-12T09:56:15","modified_gmt":"2020-05-12T13:56:15","slug":"vibrations-dune-roue-de-turbine-francis-de-haute-chute","status":"publish","type":"post","link":"https:\/\/fgosselin.meca.polymtl.ca\/?p=460&lang=fr","title":{"rendered":"Vibrations d&#8217;une roue de turbine Francis de haute chute"},"content":{"rendered":"\n<ul class=\"wp-block-gallery aligncenter columns-1 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"584\" height=\"348\" data-attachment-id=\"461\" data-permalink=\"https:\/\/fgosselin.meca.polymtl.ca\/?attachment_id=461\" data-orig-file=\"https:\/\/i0.wp.com\/fgosselin.meca.polymtl.ca\/wp-content\/uploads\/2020\/03\/spindisk.jpg?fit=752%2C448&amp;ssl=1\" data-orig-size=\"752,448\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"spindisk\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/fgosselin.meca.polymtl.ca\/wp-content\/uploads\/2020\/03\/spindisk.jpg?fit=584%2C348&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/fgosselin.meca.polymtl.ca\/wp-content\/uploads\/2020\/03\/spindisk.jpg?resize=584%2C348\" alt=\"\" data-id=\"461\" data-link=\"http:\/\/fgosselin.meca.polymtl.ca\/?attachment_id=461\" class=\"wp-image-461\" srcset=\"https:\/\/i0.wp.com\/fgosselin.meca.polymtl.ca\/wp-content\/uploads\/2020\/03\/spindisk.jpg?w=752&amp;ssl=1 752w, https:\/\/i0.wp.com\/fgosselin.meca.polymtl.ca\/wp-content\/uploads\/2020\/03\/spindisk.jpg?resize=300%2C179&amp;ssl=1 300w, https:\/\/i0.wp.com\/fgosselin.meca.polymtl.ca\/wp-content\/uploads\/2020\/03\/spindisk.jpg?resize=500%2C298&amp;ssl=1 500w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/figure><\/li><\/ul>\n\n\n\n<p class=\"has-drop-cap\">La roue d&#8217;une turbine hydraulique Francis de haute chute est aplatie et poss\u00e8de des modes de vibrations comme ceux d&#8217;un disque. Lorsque la roue tourne dans l&#8217;eau, les ondes vibratoires se propageant dans le sens de la rotation et contre la rotation interagissent diff\u00e9remment avec l&#8217;eau. Il y a donc d\u00e9doublement des fr\u00e9quences naturelles. Cela implique que le designer de la turbine doit redoubler d&#8217;ardeur pour identifier ces fr\u00e9quences et s&#8217;assurer qu&#8217;aucun ph\u00e9nom\u00e8ne de r\u00e9sonance ne se produira sur la turbine en op\u00e9ration.<br>Cette t\u00e2che est maintenant (l\u00e9g\u00e8rement) simplifi\u00e9e par le nouveau mod\u00e8le analytique d\u00e9velopp\u00e9 par Max Louyot dans le cadre de sa ma\u00eetrise en partenariat avec Andritz Hydro Canada, publi\u00e9 dans le <a href=\"https:\/\/authors.elsevier.com\/a\/1aikk_KF5M6hC%7E\">Journal of Fluids and Structures<\/a>.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La roue d&#8217;une turbine hydraulique Francis de haute chute est aplatie et poss\u00e8de des modes de vibrations comme ceux d&#8217;un disque. Lorsque la roue tourne dans l&#8217;eau, les ondes vibratoires se propageant dans le sens de la rotation et contre &hellip; <a href=\"https:\/\/fgosselin.meca.polymtl.ca\/?p=460&#038;lang=fr\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[11],"tags":[60,58],"class_list":["post-460","post","type-post","status-publish","format-standard","hentry","category-uncategorized-fr","tag-fsi","tag-hydro-electric"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p66sKU-7q","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=\/wp\/v2\/posts\/460","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=460"}],"version-history":[{"count":4,"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=\/wp\/v2\/posts\/460\/revisions"}],"predecessor-version":[{"id":472,"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=\/wp\/v2\/posts\/460\/revisions\/472"}],"wp:attachment":[{"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=460"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fgosselin.meca.polymtl.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}