{"id":32130,"date":"2018-12-13T15:53:09","date_gmt":"2018-12-13T15:53:09","guid":{"rendered":"\/forum\/forums\/topic\/flow-along-wall-at-small-velocity\/"},"modified":"2018-12-13T15:53:09","modified_gmt":"2018-12-13T15:53:09","slug":"flow-along-wall-at-small-velocity","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/flow-along-wall-at-small-velocity\/","title":{"rendered":"flow along wall at small velocity"},"content":{"rendered":"<p>Hello,<\/p>\n<p><\/p>\n<p>I am modeling a 2d multiphase flow (air and water) with gravity enabled in negative x- and y-direction. It seems that the water flows along the wall, even though the gravity is greater in y-direction (see below). The area is filled with air. Did I forget to disable any kind of wall adhesion? If I increase my velocity at the inlet, it doesn&#8217;t flow along the wall.<\/p>\n<p><\/p>\n<p>Some Boundary Conditions:<\/p>\n<p><\/p>\n<p>&nbsp;&nbsp;&nbsp;Gravity: x: -4.25 m\/s&sup2; , &nbsp; &nbsp;&nbsp; y: -7.3575 m\/s&sup2;<\/p>\n<p><\/p>\n<p>&nbsp;&nbsp; Velocity at inlet (Volume fraction of water = 1): -0.01 m\/s <\/p>\n<p><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/p>\n<p><\/p>\n<p>Thank you in advance!<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/7dde10a5-f3bd-4321-8051-a9ac010a7535\/76aeb524-c6a5-4547-9b7b-a9b5010375d7_wall-flow.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-32130","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=\"Hello, I am modeling a 2d multiphase flow (air and water) with gravity enabled in negative x- and y-direction. 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