i want to simulate the natural convection problem, but how to set the bousinesq in star cd

Use isobaric option for density in the material properties menu. Specify beta there.

then how to set the bouyancy in the gui. regards

Sorry for being rude, but simply RTFM. You can google the meaning of it, if you know how to run the internet explorer (the program to see web pages).

If you want to be succesfull with your project, you have to read the manual to the programm!!! If you cannot access the manual, your supervisor MUST give you one.

By the way, it is mush faster and easier to find answers to such a basic questions in a maunal, than asking basic questions on the forum.

Finally it is devaluating the forum and readers are likely to stop following it, if it's full of these questions answered in very understandable way in the manual and tutorials.

good luck with your computations!

matej

isobaric and beta - is it really the right way to do? I think, density should be ideal f(T) - so you have isobaric (because it is not f(t,p)) and the density depends on the ideal gas law?! beta = 1/T_amb

I also thought boussinesq means that density differences are sufficiently small to be neglected, except where they appear in terms multiplied by g - don't you define these terms in the buoyancy tab (for example only in -z?)

is the following mail I got from dpshaka, or is it someone else?

have fun, matej

The following email was sent to you via the CFD Online, STAR-CD User Forum from dpshaka (ztdep@163.com) at IP address 218.25.251.168.

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Re: how to set the Bousinesq assumptiong

FUCK YOU MAMA, I HAVE SEARCHED ,BUT I HAVN'T FIND THE ANSWER, IF THE FORUM IS FULL OF THE BITCH LIKE YOU , THE FORUM WILL BE DEAD.

FUCK YOU

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