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Old   August 8, 2001, 14:30
Default Multiphase and Chemical Reaction
  #1
Daniel
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I am working with Multiphase (gas-solid) flow. I would like to simulate a chemical reaction between the gas and the solid (heterogenous reaction). How can I do this using the CFX 4.4?
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Old   August 9, 2001, 04:17
Default Re: Multiphase and Chemical Reaction
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Matej Forman
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Hi

sorry to say, but the best approach would be to read the manual and tutorials (. It is not that boring.

good luck!

Matej
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Old   August 9, 2001, 07:13
Default Re: Multiphase and Chemical Reaction
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tedmcc
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Hi Daniel

You need to code the reaction(s) yourself through USRSRC and use USRIPM to account for the inter-phase mass transfer.

Try to code a simple chemical reaction in a single phase first then build in the complexity, e.g. start with reference example 33 or 34. At least that's how I do mine.

Good luck.

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Old   August 9, 2001, 10:46
Default Re: Multiphase and Chemical Reaction
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Ribeiro
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Daniel.

Das dicas que os caras te enviaram, devo acrescentar o fato (que acho que ja discutimos) de que a taxa de reacao deve ser incluida no balanco de energia.

Quanto a simulacao em paralelo, ainda ha muitas controversias sobre a implementacao dela em diversas maquinas e sistemas. Existe sim algumas restricoes sobre alguns modelos e algoritmos que nao sao compativeis com o conceito de processamento paralelo. No manual tem bastante coisa a respeito de modelos incompativeis mas a principio, voce nao usa nada que nao possa ser usado. De qualquer forma, eu ainda nao consegui aqui rodar em paralelo com uma subrotina em Unix pois a maquina (Sun) nao tem o compilador compativel com o CFX-4. Claro que a modelagem deste problema me interessa e intriga e estarei sempre acompanhando sua implementacao. No entanto, o tempo eh curto para eu conseguir sentar e criar todo o setup deste problema.

Abraco
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