[aliemadi]

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
Ali Emadi

[abubakarizhar]

Try to set physical time-scale to 0.02 sec or lower for steady state simulation.

[ghorrocks]

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

[tsibel]

Now I have the same problem. Could you explained to me that how did you solve this problem?

Thanx

Originally Posted by aliemadi

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
Ali Emadi

[soumitra2102]

Originally Posted by tsibel

Now I have the same problem. Could you explained to me that how did you solve this problem?

Thanx

Now me too have the same problem. If you have solved the problem, could you please explain it to me?


Thanks