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- - **RPI wall boiling model
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RPI wall boiling model
Dear all,
I'm looking for some help from people who are familiar with the RPI Wall boiling model custom CFX solver supplement. ( I am trying to model boiling in a heated tube. The problem is set up as described in the provided examples and documentation, two fluids with constant properties, etc. My problem is the following: Depending on the problem (or on the model) 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 Current Directory : /FLOW/SOLUTION/TSTEP956/CLOOP1/ZN1/VERTICES " Any help would be appreciated. Thanks Bogdan |

Dear Bogdan
I have this problem in a exactly similar condition.I examined different condition to may solve this problem but this also exist. Did your problem has been solved? Regard Ali Emadi |

Dear Ali
I have just encoutered this problem.Have you solved it? |

Quote:
I couldn't solve this problem fortunately. |

wall superheat bisection algorithm failsDear all,
I met a very similar case. when I calculate an unsteady case with RPI model on and relative large wall heat flux, I got this error message: Wall superheat bisection algorithm failed to converge. Continue with wall superheat = 1.0000072E-01 of minimum relative error = 4.5705986E-2 With steady state or low wall heat flux, the calculation is OK. Is anyone know how to fix it? Thanks Zhang Peng |

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