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problem for convergence in periodic boundary condition of fluid flow

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Old   September 16, 2017, 04:17
Default problem for convergence in periodic boundary condition of fluid flow
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hello all,

I am investigating of flow of non newtonian fluid in a rectangular micro-channel. The inlet and outlet boundaries are defined as periodic boundary condition and walls are maintained at constant heat flux. The flow is in laminar regime. I have given power law and flow consistency index for the fluid.
During simulation, energy are not converge , I have also change the relaxation factor but the problem is same.

please give some suggestion on How make energy converge?
It will be helpful.

Thanks in advance.
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