CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Main CFD Forum (http://www.cfd-online.com/Forums/main/)
-   -   shock tube (http://www.cfd-online.com/Forums/main/13963-shock-tube.html)

Shuo August 15, 2007 23:50

shock tube
 
How do I find the entropy of flow in a shock tube given P,rho,V?

Regards Shuo

jinwon park August 16, 2007 01:02

Re: shock tube
 
entropy=p/rho^gamma in the shock tube problem

Shuo August 16, 2007 01:14

Re: shock tube
 
And is internal energy P/(gamma - 1)+rho*u^(2)

Shuo August 16, 2007 01:45

Re: shock tube
 
I also ploteed the mass flux (rho*V) variation in a shock tube. it's not constant! Shouldn't mass flow be conserved?

jinwon park August 16, 2007 23:25

Re: shock tube
 
No. If you considered an ideal gas law, the internal energy is rho*e=p/(gamma-1) in which e stands for the internal energy.


jinwon park August 16, 2007 23:54

Re: shock tube
 
Your did stand for the total energy, not the internal energy.



All times are GMT -4. The time now is 02:56.