Pressure difference

[xingjian]

Hello,

I want to add a turbine in an exhaust pipe to enhance its exhaust performance, do not need to simulate a real turbine, because there is a the pressure difference, so how can achieve a pressure difference in CS?

Best Regards

XING Jian

[Yvan Fournier]

Hello,

You can use a momentum source term, adjusted using a feedback from previous time steps to obtain the desired pressure difference in the turbine.

Regards,

Yvan

[xingjian]

Hello Yvan,

Could you please explain more in detail, by using which function?

Thanks very much

Best Regards

XING Jian

[Yvan Fournier]

Hello,

You can check for head source term examples in the Doxygen user documentation. You can use "ustsnv", defined in cs_user_source_terms.f90.

For measurement of pressure difference, a clean solution may be to use the head losses measurement functions (also described under Doxygen), or for starts, compare pressure at two different points (or average pressure integrated on two planes or boxes).

Regards,

Yvan

[xingjian]

Hello Yvan,

I do not want to change the subroutine, if i just use the GUI, can I achieve this function?

Thank you very much

Best Regards

XING Jian

[Yvan Fournier]

Hello,

Using the GUI, you might be able to do something similar using thr "fans" functionnality (which adds a source term given a fan characteristic curve).

Best regards,

Yvan