macros for pressure drop
 

Can some body help me to write a macro in Star-Cd to compute pressure drop. Where exactly macros are located and how to access these macros in pro-star post processing?

Dr C.Bhasker

Re: macros for pressure drop
 

http://www.adapco-online.com/adapco_...t/drpost9.html http://www.adapco-online.com/adapco_...sh4/index.html

This is sort of consulting work and if you are willing to pay it should be no problem to do this for you.

Re: macros for pressure drop
 

Instead of using a macro, I wrote one as a panel. The pressure drop is measured between two different cell types. I just used cset,newset,zone and chose the regions. The pressure drop then is calculated using: oper getc ptot 1 oper getc volu 2 oper mult 1 2 3 cset,newset,type,75 *get prdt1 rtot 3 *get volu1 rtot 2 *set pin prdt1 / volu1

cset,newset,type,76 *get prdt2 rtot 3 *get volu2 rtot 2 *set pout prdt2 / volu2

*set DP pout - pin I hope this helps.

Tom

Re: macros for pressure drop
 

Man, I don't know how you guys can stand using Star-CD! This is ugly. In CFX, you just write a simple, readable expression:
Pressure Drop = areaAve(Pressure)@Outlet - areaAve(Pressure)@Inlet

You can also use a mass flow average, arithmetic average, etc.

-Fred

Re: macros for pressure drop
 

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CFX Pressure Drop Along A Streamline Path
 

Your post was from a LONG time ago but I just found it extremely usefull.
Do you have any tips on graphing the pressure drop through a streamline in CFX?
The only thing I have found is to create a polyline using points and then graph pressure along it?