{"id":311368,"date":"2023-10-13T08:12:02","date_gmt":"2023-10-13T08:12:02","guid":{"rendered":"\/forum\/forums\/topic\/discontinuity-of-velocity-between-rotating-and-stationary-domains\/"},"modified":"2023-10-13T08:12:02","modified_gmt":"2023-10-13T08:12:02","slug":"discontinuity-of-velocity-between-rotating-and-stationary-domains","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/discontinuity-of-velocity-between-rotating-and-stationary-domains\/","title":{"rendered":"Discontinuity of velocity between rotating and stationary domains"},"content":{"rendered":"<p>Hi, I am trying to simulate a hydro turbine in a water flow using Fluent. I followed some tutorials online and made two domains: rotating (with boolean turbine) and stationary domain. The rotating domain has &#8216;Frame Motion&#8217;, and the walls are &#8216;stationary wall&#8217; with &#8216;relative motion to adjacent cell zone&#8217;. The inlet is velocity inlet with 2.5m\/s water flow and outlet is pressure outlet with gauge pressure set to 0Pa.<\/p>\n<p>When I ran the simulation, I got this contour that shows discontinuity of velocity between stationary and rotating domain. The velocity streamlines also stop when it touches the turbine, which I suspect is due to the discontinuity. Can anyone help me with this problem?<\/p>\n<p>I attach some photos to hopefully help you understand what I describe. Thank you.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/10\/13-10-2023-1697184444-mceclip0.png\" width=\"785\" height=\"529\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/10\/13-10-2023-1697184574-mceclip1.png\" width=\"786\" height=\"528\"><\/p>\n","protected":false},"template":"","class_list":["post-311368","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi, I am trying to simulate a hydro turbine in a water flow using Fluent. I followed some tutorials online and made two domains: rotating (with boolean turbine) and stationary domain. The rotating domain has &#039;Frame Motion&#039;, and the walls are &#039;stationary wall&#039; with &#039;relative motion to adjacent cell zone&#039;. 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