# shock tube

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 August 15, 2007, 23:50 shock tube #1 Shuo Guest   Posts: n/a How do I find the entropy of flow in a shock tube given P,rho,V? Regards Shuo

 August 16, 2007, 01:02 Re: shock tube #2 jinwon park Guest   Posts: n/a entropy=p/rho^gamma in the shock tube problem

 August 16, 2007, 01:14 Re: shock tube #3 Shuo Guest   Posts: n/a And is internal energy P/(gamma - 1)+rho*u^(2)

 August 16, 2007, 01:45 Re: shock tube #4 Shuo Guest   Posts: n/a I also ploteed the mass flux (rho*V) variation in a shock tube. it's not constant! Shouldn't mass flow be conserved?

 August 16, 2007, 23:25 Re: shock tube #5 jinwon park Guest   Posts: n/a 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.

 August 16, 2007, 23:54 Re: shock tube #6 jinwon park Guest   Posts: n/a Your did stand for the total energy, not the internal energy.

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