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GRAVITY EFFECT IN CFX-5.5

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Old   September 24, 2002, 17:10
Default GRAVITY EFFECT IN CFX-5.5
  #1
alexander
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hi everybody, my question is how can I take in count the effect of gravity in cfx-5.5, my computational model is just fluid flow (momentum and turbulence,,

thanks

best regards

alexander
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Old   September 24, 2002, 17:50
Default Re: GRAVITY EFFECT IN CFX-5.5
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Luis Bustamante
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tienes que utilizar un modelo de turbulencia adecuado, yo he utiliazdo el modelo k-e y el modelo RNG k-e y siempre me ha resultado bien.

Saludos Luis
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Old   September 24, 2002, 18:19
Default Re: GRAVITY EFFECT IN CFX-5.5
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alexander
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gracias luis por contestar, estoy utilizando el modelo k-e, esta es una simulacion de flujo de fluidos, no hay trasferencia de calor en ella, pero quiero saber como se activa la gravedad para este tipo de simulaciones, se que se pueden fijar los valores de gravedad cuando utilizo el modelo de enegia total, pero como hago para fijar la gravedad en un modelo sin transferencia de calor en cfx 5.5. tambien quiero saber si la presion de referencia que uno fija en el dominio esta relacionada o depende de la ubicacion del sistema de coordenadas (coord 0.0) para mi caso. en otra palabras la distribucion de presion que obtengo depende de este sistema de coordenadas

gracias chamo le agradeceria su ayuda
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Old   September 25, 2002, 03:00
Default Re: GRAVITY EFFECT IN CFX-5.5
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Astrid
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Hispanola's,

please use English in this forum. You can communicate in Spanish in your e-mails, as you seem to know each other.

Astrid
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Old   September 27, 2002, 03:15
Default Re: GRAVITY EFFECT IN CFX-5.5
  #5
Holidays
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In multiphase, and/or heat transfer cases use buoyancy to set up a differential body force.
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