RPI Wall Boiling Problem
Dear all Friend
I have a problem with a subcooled boiling model. I'm looking for some help from people who are familiar with the RPI Wall boiling model in CFX
I am trying to model boiling in a straight heated tube. The problem is set up by steady,constant property material,both as continuous fluid,buoyant,Homogenous turbulence,mixtuer two phase model and RPI wall boiling model.
My problem is as following: Depending on the problem condition the calculation crashes after some number of iterations following a huge number repetitions of the following message:
" cal_TSUP1 WARNING: Changing upper bound for heat partition algorithm "
and at the end the error message is the following:
" ERROR #001100279 has occurred in subroutine ErrAction. Message: Heat partitioning algorithm failed to fix upper bound of bisection
Details of error:- ---------------- Error detected by routine FNDFIL CFNAME = * CRESLT = OLD
Can anybody help about this problem?
thanks to all
Try to set physical time-scale to 0.02 sec or lower for steady state simulation.
You are doing quite a specialised simulation so you should expect some difficult convergence issues. This is not a simulation to be attempted by a beginner.
I have no specific experience in what you are doing so cannot help you directly, other than the general tips listed in this FAQ: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F
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