June 1, 2021 at 4:37 amP_HengSubscriber
Hello everyone, have the awesome day.
I have some problems to ask all of you.
I got a research from my professor and the research is related to the fluid flowing across the domain under the ground.
I have to use the periodic boundary condition for my domain because This research involves the nature flow and I am allowed to add the gravity = 1, viscosity = 1, density = 1 (using boussinesq) only.
For my whole domain I can use the periodic boundary condition. And then, my professor wanted me to cut the domain into 4 sections and I can still use the periodic boundary condition because both interfaces are the same shapes.
The problem comes now when my professor wanted me to cut the domain into 8 sections and I cannot use the periodic boundary condition because both interfaces are not the same. I will send the pictures for all of you.
I want to know that are there boundary conditions that is able to be used instead of periodic boundary condition?
I also want to tell that the velocity result of whole domain and 1/4 domain are the same. But their results are different from 1/8 section of domain because I cannot use the periodic boundary condition for 1/8 and I try the other boundary condition, such as symmetry boundary condition.
Inside curves of the domain is solid.
Thanks for your time.June 1, 2021 at 4:54 amP_HengSubscriberHello everyone
I want to know that are there boundary conditions that is able to be used instead of periodic boundary condition for 1/8 sections domain?
My regards P. Heng.
June 1, 2021 at 11:28 amRobAnsys EmployeeGiven that gravity will act "up" and that the surfaces aren't periodic I don't know which boundary you can use as the results will be computationally correct but physically meaningless. However, with that mesh I'd not trust any results from the solver.
June 1, 2021 at 11:39 amP_HengSubscriber
Thanks for your response.
I ever did 1/4 section of domain with periodic boundary condition, but my professor wants me to try 1/8 section of domain.
Anyway, thank you again.
My regards P. Heng.
June 1, 2021 at 12:58 pmRobAnsys EmployeeViewing 4 reply threads
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