About the code “alphaPhi1 = alpha1Eqn.flux() ” in the solver compressibleTwoPhaseEule -- CFD Online Discussion Forums

March 18, 2013, 09:37	About the code “alphaPhi1 = alpha1Eqn.flux() ” in the solver compressibleTwoPhaseEule	#1
aegean333 New Member Xiaohuan Join Date: Jul 2011 Posts: 3 Rep Power: 14	In “alphaEqn.H” file, after solving alpha equation, it defines: alphaPhi1 = alpha1Eqn.flux(); alphaPhi2 = phi - alphaPhi1; Do someone know how to calculate alpha1Eqn.flux()? Is it different with “fvc::interpolate(alpha1)phi1”? In the UEqns.H, fvm::ddt(alpha1, U1) + fvm::div(alphaPhi1, U1) - fvm::Sp(fvc::ddt(alpha1) + fvc::div(alphaPhi1), U1) Do the codes mean “d(alpha1U1)/dt + div(alpha1U1 U1)” ? Why does it add the third term? Thanks for your time.

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