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-   -   Help solve nozzle flow with Bubble dynamics (http://www.cfd-online.com/Forums/main/10544-help-solve-nozzle-flow-bubble-dynamics.html)

cfdoy December 28, 2005 23:47

Help solve nozzle flow with Bubble dynamics
 
Hello: I have the following set up of equations for a quasi-flow in a 1D nozzle:

alpha = vol fraction A = area of nozzle U = Velocity

Continuity:

d/dt(alpha)+1/A*d/dx(alpha*U*A)=0

Momentum Eq:

d/dt(alpha*U)+1/A*d/dx(alpha*U*U*A)=-d/dx(P)+mu*laplacian(U)

Additional eqn for Alpha based on few more differential eqns.

I was wondering, if someone could help me set up a MAC like scheme for solving the momentum equation ??

Thanks,

CFDtoy



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