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Member
Andy
Join Date: Jul 2017
Posts: 62
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Hi,
ich am simulating a simple 2d-pipe mit a nozzle as a test for later combustion chamber. k-epsilon, methane, no ractions, very good cell quality, ideal gas I always get good convergences (with different turb.models, pressuren, etc.) except of if I set the heat capacity (cp) from constant to "kinetic law". Then i get fluctuations in the residuals, the mass-flow. I guess it comes from the nozzle-reagion. Does anybody have experience with this setting? What could be the reason? Thanks Pictures: after the 60th iteration i switched to "kinetic theory" for cp Bild1.jpg Bild2.jpg Bild3.jpg |
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heat capacity, kinetic theory |
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