January 6, 2023 at 10:25 pm
HuiLiu
Ansys Employee

Hi the default Air properties won't work for your application. You can consider using the hydrostatic elements. See this link:

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v222/en/ans_elem/Hlp_E_HSFLD242.html