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-   -   Redlich kwong equation of state for drysteam (http://www.cfd-online.com/Forums/cfx/23905-redlich-kwong-equation-state-drysteam.html)

Pankaj April 25, 2007 03:58

Redlich kwong equation of state for drysteam
 
I m using redlich kwong eqn of state for dry steam calculation in a compressor problem with certain temp and pressure as per steam table as a reference state with ref enthalpy and ref entropy values specified zero. But in post processing after a converged solution,the density variations with pressure are not as per std steam table,also the Rothaly is quiet large compared to the pressure and so is the temperature. Does anyone have any idea about how to use Drysteam in cfx11 for compression process.

Gert-Jan April 26, 2007 16:11

Re: Redlich kwong equation of state for drysteam
 
Do you use total energy?

Gert-Jan

pankaj April 27, 2007 00:41

Re: Redlich kwong equation of state for drysteam
 
Yes gert i m Using Total Energy.

HekLeR May 8, 2007 16:20

Re: Redlich kwong equation of state for drysteam
 
what steam table do you use?

what p range are you compressing over?

perhaps iapws in cfx11 is the solution


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