Defining Initial Species Mixture for Driven Gas in Shock Tube

andromeda91 · June 4, 2019, 01:28

Dear All,

I try to simulate a shock tube simulation with a mixture of O2 and Ar in the driven tube. I looked into google and found that patch can be used to define the pressure difference between driver and driven tube. However, I cannot do the same for the initialization mole fraction in the mixture for O2 and Ar.

Can somebody help me how should I solve this issue?

Thanks!

LuckyTran · June 4, 2019, 12:05

You can patch the mixture the same way you patch the pressure.

The only thing that can go wrong is you can't find the variable. The variable is going to depend on what your model is.

June 4, 2019, 01:28	Defining Initial Species Mixture for Driven Gas in Shock Tube	#1
andromeda91 New Member Y Yang Join Date: Nov 2012 Posts: 25 Rep Power: 14	Dear All, I try to simulate a shock tube simulation with a mixture of O2 and Ar in the driven tube. I looked into google and found that patch can be used to define the pressure difference between driver and driven tube. However, I cannot do the same for the initialization mole fraction in the mixture for O2 and Ar. Can somebody help me how should I solve this issue? Thanks!

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June 4, 2019, 12:05		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,761 Rep Power: 66	You can patch the mixture the same way you patch the pressure. The only thing that can go wrong is you can't find the variable. The variable is going to depend on what your model is.