|October 31, 2009, 10:28||
continuity diverging problem
Join Date: Sep 2009
Posts: 2Rep Power: 0
I am solving non-newtonian blood flow with carreau model.
Because I couldn't understand what the "Activation Energy" in ""property panel >> viscousity >> carreau "" I made my UDF code for carreau model
, which is below
#define mu_inf 0.00345
#define rho 1050
#define mu0 0.056
#define n 0.3568
#define K 3.133
real mu_carr, gamma;
real n1 =(n-1)/2;
gamma = C_STRAIN_RATE_MAG(c,t);
mu_carr = mu_inf +(mu0 - mu_inf)*pow((1+pow(K,2)*pow(gamma,2)), n1 );
First, I solved the case with constant viscosity, mu_inf=0.003465
and then, only changed fluid viscosity by udf carreau model and reiterated the case.
Here, I got some problems.
all of the residuals , espcially the continuity, diverge.
I cannot notice what the problem is, And i need ur help!!
Is there anyone who can let me know How can i get the right solution?
Please help me,,,
|carreau, diverge, non-newtonian, udf, viscosity|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Transient simulation not converging||skabilan||OpenFOAM Running, Solving & CFD||12||September 17, 2007 18:48|
|continuity residual convergence problem||Cdx||FLUENT||0||March 13, 2007 07:15|
|problem with continuity residual||dario||FLUENT||1||October 1, 2006 08:23|
|Could anybody help me see this error and give help||liugx212||OpenFOAM Running, Solving & CFD||3||January 4, 2006 19:07|
|problem with using colocated code||Jack||Main CFD Forum||0||December 15, 2002 01:15|