Mass flow calculation across a mesh section
 

Hi guys,

Can anybody please give me some idea about how to calculate the mass flow rate (not mass flux) across a particular mesh section in the flow domain in STAR-CD(excluding the boundary regions)?

Thanks, Haris

Re: Mass flow calculation across a mesh section
 

First build an appropriate cset. Define your section e.g. "spoint curs". Load velocities and densities: "getc all dens". Use integration: "intergrate cset".

You get in the last position the product A*VN*S which, with velocity as a vector and densitiy as a scalar quantity, yields the mass flow rate in [kg/s].

For two-phase flow the result might be wrong, because S is only the density of the light fluid. In this case you must take the value A*VN and do the density multiplication by hand.

In case you already know your cross sections in advance it might be more accurate to write a dedicated postdat.f function

Re: Mass flow calculation across a mesh section
 

Thanks Gentleman. Thanks for your suggestion.

Haris

Re: Mass flow calculation across a mesh section
 

Thanks Gentleman,

Thanks for your response.

Haris