Hello,

How do we define the reference pressure for simultaing a flow over a hydofoil with cavitation model. Cavitation model requires to define saturation pressure in absolute terms but to minimize the errors in pressure computation for flow over a hydrofoil it is suggested to use a reference pressure of 1atm.

your input is very appreciated.

Thanks, CFD user

Hi,

Set the reference pressure at the default pressure level in the domain. I assume you are doing a hydrofoil in a normal atmosphere, so a reference pressure of 1 atm is appropriate.

Glenn Horrocks

Thanks Glenn for your response. So if we are using a reference pressure of 1atm how should we define the saturation presssure. Should I still define the saturation pressure as 3500pa.

Thanks a lot for your time, CFD user

Hi,

This is discussed in the documentation. I think it has to be set as an absolute pressure but you should check.

Glenn Horrocks

[Torque_Converter]

Sorry to bring up this old thread, but to be sure about something, would one have to alter the saturation pressure if one alters the reference pressure then?

[ghorrocks]

Have a look in the documentation to check whether the saturation pressure is defined as an absolute or relative pressure. I am pretty sure it is an absolute pressure.