https://forums.autodesk.com/t5/cfd-forum/wall-pressure/m-p/8543135#M8082 <P>The pressure value is positive is the force from the pressure pushes into the surface and negative is it pulls away from the surface.&nbsp; The below picture is a sphere in a constant pressure environment.&nbsp; The two surfaces in the results window are the two halves of the sphere (split through the Y-Z plane)showing how the pressures are the same (exerts force towards the center of the sphere in all directions) and the forces cancelling each other out in all but X.<span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Capture.JPG" style="width: 999px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/594261i88695C88DCD9CC76/image-size/large?v=v2&amp;px=999" role="button" title="Capture.JPG" alt="Capture.JPG" /></span></P> <P>&nbsp;</P> <P>This gets a little trickier to visualize on complex geometry as the average p</P> Wed, 23 Jan 2019 13:33:58 GMT bob.schlosser 2019-01-23T13:33:58Z https://forums.autodesk.com/t5/cfd-forum/wall-pressure/m-p/8542730#M8081 <P>Hello All,</P> <P>&nbsp;</P> <P>I am calculating pressure on wall. Can anyone tell me what negative sign represent in the attached screen capture. Any help would be greatly appreciated.</P> <P>&nbsp;</P> <P>Best Regards,</P> <P>Ashish</P> Wed, 23 Jan 2019 10:41:36 GMT https://forums.autodesk.com/t5/cfd-forum/wall-pressure/m-p/8542730#M8081 Anonymous 2019-01-23T10:41:36Z https://forums.autodesk.com/t5/cfd-forum/wall-pressure/m-p/8543135#M8082 <P>The pressure value is positive is the force from the pressure pushes into the surface and negative is it pulls away from the surface.&nbsp; The below picture is a sphere in a constant pressure environment.&nbsp; The two surfaces in the results window are the two halves of the sphere (split through the Y-Z plane)showing how the pressures are the same (exerts force towards the center of the sphere in all directions) and the forces cancelling each other out in all but X.<span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Capture.JPG" style="width: 999px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/594261i88695C88DCD9CC76/image-size/large?v=v2&amp;px=999" role="button" title="Capture.JPG" alt="Capture.JPG" /></span></P> <P>&nbsp;</P> <P>This gets a little trickier to visualize on complex geometry as the average p</P> Wed, 23 Jan 2019 13:33:58 GMT https://forums.autodesk.com/t5/cfd-forum/wall-pressure/m-p/8543135#M8082 bob.schlosser 2019-01-23T13:33:58Z