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February 12, 2014, 08:57
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HIgh viscosity - convergence issues
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New Member
Rams Manu
Join Date: Oct 2013
Posts: 21
Rep Power: 12  |
Hi,
I am running a simple flow through a pipe. The pipe has flowing water and oil trapped beneath. I am using VOF explicit scheme with CICSAM. When I run for oil viscosity comparable to water the number of iterations required per time step to converge (to 1e-6) is just 1 or 2 iterations. But when I increase the oil viscosity, the residuals does not reach 1e-6 even if have 100 iterations/time step. My courant number is around 0.2 and Re around 0.5 Is there anything that can be done to improve the convergence ? Manxu |
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| convergence issues, high viscosity |
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