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-   -   How to change the reference pressure value to 0 Pa (http://www.cfd-online.com/Forums/cd-adapco/53368-how-change-reference-pressure-value-0-pa.html)

Lee June 28, 2003 19:15

How to change the reference pressure value to 0 Pa
 
I want to change the reference pressure value from 1.0e+05 Pa to 0 Pa when I run a model,in the "monitoring and reference data" I tried to change the reference pressure value into 0 Pa,but when I typed the "apply" buton,I found the reference pressure data value always to return to 1.0e+05 Pa.

So,I want to know whether I can change the reference pressure value,if possible,how can I do?

Thank you very much for your help!

Lee

John June 30, 2003 05:34

Re: How to change the reference pressure value to
 
This is probably a design erro - but as a fix, you can use a very small non-zero value such as 1.e-05

Lars Ola Liavåg July 1, 2003 00:32

Re: How to change the reference pressure value to
 
The thing is, the reference pressure value needs to be input as absolute pressure and if you set it to 0, you basically specify perfect vacuum; hardly a condition where the Navier-Stokes equations apply anymore... Perhaps CD have put a limit on purpose?

Regs,

Lars Ola


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