June 23, 2021 at 4:23 pmsbleeSubscriber
I want to do a transient FSI simulation to investigate the structural response out of changed fluid pressure input. In a L shaped pipeline, for example, where inlet/outlet pressure is 50 psi uniformly, I want to have a sudden increase of inlet pressure to 80 psi (and no change of outlet pressure). I want to review the transient structural response (e.g., y directional displacement at the cornered area ). Do we call this as "pressure shock?" Thanks.June 24, 2021 at 12:50 pmKarthik RAdministratorHello Yes, you should be able to do this using the System Coupling in Ansys Workbench. You will need to couple Ansys Mechanical and Fluent (or CFX). There are some tutorials on how to set up such problems in Ansys Help. Here is the link.
June 25, 2021 at 2:09 amJune 25, 2021 at 2:21 amsbleeSubscriberI found this article - seems like Min knows the answer?
Min ZhangDalian University of Technology, ChinaPosts:20MemberNovember 2017edited November 2017Flag
I have not ever performed transient simulations, but two methods may help.
1 you can create an Expression if the Pressureis a function of the timet. eg. P=101325[Pa]+10[Pa/s]*t (notice the unit)
2 your can set the inlet pressure profile usingUser Fortran. I just learned something aboutCFX User Fortran. It can obtain the transient information, set the boundary profile and so on.
June 25, 2021 at 2:35 pmKarthik RAdministratorHello Yes, you can do this. You can use expressions to ramp up your inlet pressure over time (similar to a spike) and obtain the impact of this on the walls of your domain in Ansys Mechanical.
You can do the same on both CFX and Fluent.
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