Fluid type amp properties

cfdphil · March 12, 2008, 06:38

Hi,
I'm just getting started in openfoam and am wondering how I define what fluid I am using (i.e air) and what properties this has (i.e the operating pressure and density). The only input I have found so far is dynamic viscosity but there must be somewhere where I can define the properties?

Thanks,

Phil

jens_klostermann · March 12, 2008, 08:01

Hi Phil,

Welcome to OF.
nu in OF is usually the kinematic viscosity, but you can check the dimensions, see also User's Guide!
Density and operating pressure is for most (not all) incompressible flows irrelevant (this is also the case in Fluent)!

Jens

March 12, 2008, 06:38	Hi, I'm just getting started	#1
cfdphil New Member cfdphil Join Date: Mar 2009 Posts: 8 Rep Power: 17	Hi, I'm just getting started in openfoam and am wondering how I define what fluid I am using (i.e air) and what properties this has (i.e the operating pressure and density). The only input I have found so far is dynamic viscosity but there must be somewhere where I can define the properties? Thanks, Phil

March 12, 2008, 08:01	Hi Phil, Welcome to OF. nu	#2
jens_klostermann Senior Member Jens Klostermann Join Date: Mar 2009 Posts: 117 Rep Power: 17	Hi Phil, Welcome to OF. nu in OF is usually the kinematic viscosity, but you can check the dimensions, see also User's Guide! Density and operating pressure is for most (not all) incompressible flows irrelevant (this is also the case in Fluent)! Jens

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