October 18, 2020 at 5:53 pmShaimaaSubscriber
Can I found an answer for my problem.
I import two parts inside the fluid module, the first one has an outlet and inlet and contain air(named as tool) .the next one is a fluid cavity(named as fluid cavity) ,I want to patch an initial value pressure of 2000pa for the fluid cavity. when i patch for the fluid cavity the fluid pressure not changes although when I patch value for the air zone the value of pressure changed.October 19, 2020 at 7:14 amDrAmineAnsys EmployeeIs it incompressible and steady?nOctober 21, 2020 at 7:02 amShaimaaSubscriberYesnnOctober 21, 2020 at 11:12 amRobAnsys EmployeeCan you check the settings in both cell zones & post these here?nOctober 22, 2020 at 2:05 pmOctober 22, 2020 at 2:11 pmDrAmineAnsys EmployeeThat is per design: for incompressible flow ANSYS Fluent subtracts the reference pressure from initialized pressure field, unless you have an opening.nnDo you have an opening first?nOctober 22, 2020 at 2:29 pmShaimaaSubscriberThank a lot for your answer,DrAmine I have an inlet and outlet for the tool.nnOctober 22, 2020 at 5:04 pmDrAmineAnsys EmployeeSo you have 2 domains one filled with air the other with water. The one for water is closed and it is incompressible. Can you just turn on unsteady solver and patch again? nOctober 23, 2020 at 6:00 amShaimaaSubscriberThanks a lot for your support.Dr Amine,nYes , I have 2 domains one filled with air the other with water. The one for water is closed and it is in compressible.nI turn on the unsteady solver , but the main problem still found I can patch pressure value for tool not for the fluid cavity. the pressure value for the fluid still zero although I changed its value.nIs there another condition should I set to start the fluid cavity with 2000pa.nnOctober 23, 2020 at 8:40 amDrAmineAnsys EmployeePlease volume average of absolute pressure in the cavity and stop reporting Total Pressure. What does that value tell?nOctober 23, 2020 at 10:28 amOctober 23, 2020 at 10:37 amRobAnsys EmployeeIf you have two domains that are separated by a wall, where's the wall-shadow? If they're non-conformal where's the interface bc? Please put a plane or iso-surface of mesh z-coordinate across the domain plotting pressure and also showing the mesh. nOctober 24, 2020 at 5:54 pmShaimaaSubscriberHello,nActually ,between the the two fluids there are a structural separated the two fluids .nThis structure is suppressed in the fluid module.nOctober 26, 2020 at 11:18 amRobAnsys EmployeeWhat purpose is the water region in the CFD model then? nOctober 26, 2020 at 2:20 pmShaimaaSubscriberActually ,just from one hour I knew that this fluid cavity has an inlet and outlet . So I will modify my modelnThanks a lot for you supportnViewing 14 reply threads
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