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hystrath / hyStrath

Hypersonic / Rarefied gas dynamics code developments (GPL-3.0)
https://hystrath.github.io/
GNU General Public License v3.0
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Higher relaxation time in Non-reacting N2-O2 #88

Closed connectsk closed 3 years ago

connectsk commented 3 years ago

While running simulation for non-reacting N2-O2 heat bath case with VT & VV relaxations, I got higher relaxation time. I am unable to find where I have made a mistake while setting the case files. Help me to resolve the issue.

thanks,

VT_VV_relaxation_N2_O2_heatbath_nonreacting.zip VT_VV_relaxation_N2_O2_heat_bath

vincentcasseau commented 3 years ago

There are two reasons:

  1. Multiple vibro-electronic energy pools: currently disabled, see website. Use the single Tv model instead without VV.
  2. You are using the wrong values for sigma_m,s, see pp. 46-48 in my thesis, paragraphs 3.1.2 & 3.1.3

Thanks