<div dir="ltr">Hi Antoine,<div><br></div><div>You can accomplish this with the MultiSpecies unit combined with the MultiGamma EOS implementation. The easiest way would be to add the following to your setup line "<span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0);font-family:Menlo;font-size:11px">species=spc1,spc2 </span>--with-unit=physics/Eos/EosMain/Multigamma", where spc1 & spc2 can be any 4 character name you want. You can then specify the gamma for each species with the runtime parameters "ms_spc1Gamma" & "ms_spc2Gamma". You'll also need to set the appropriate mass fractions for each species in your initial conditions. Take a look at the following <a href="http://flash.uchicago.edu/site/flashcode/user_support/flash4_ug_4p62/node89.html">section in the user guide</a> for some of the other runtime parameters generated by the setup for the MultiSpecies. </div><div><br></div><div>Adam</div>
</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 19, 2021 at 8:31 AM Antoine Gintrand <<a href="mailto:antoine.gintrand@gmail.com">antoine.gintrand@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Dear flash users,</div><div><br></div><div>I would like to ask if anyone knows what could be<br></div><div>the best and easiest approach to extend my simulation of the interaction <br></div><div>between 2 planar flows of an ideal gas with adiabatic index gamma=5/3</div><div><br></div><div>to the simulation of the interaction between one species with gamma=5/3 from the left<br></div><div>and a second species gamma=1.2 from the right.</div><div><br></div><div>Thank you very much for any suggestions,</div><div><br></div><div>Best,</div><div><br></div><div>Antoine.<br></div></div>
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