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Forum: CFX

September 3, 2013, 13:39

Replies: 9

time step ?

Views: 3,189

Posted By hmasenger

i used automatic time scale in SS model and as i...

i used automatic time scale in SS model and as i know(pleas confirm if i am right) changing the time scale just effects the convergence speed(rate) but doesn't cause convergence !

Forum: CFX

September 3, 2013, 12:15

Replies: 9

time step ?

Views: 3,189

Posted By hmasenger

i am modeling 2 phase flow to study cavitation...

i am modeling 2 phase flow to study cavitation phenomena.i figured it out that in some cases a SS model is not converging and a transient model should be used

Forum: CFX

September 3, 2013, 04:43

Replies: 9

time step ?

Views: 3,189

Posted By hmasenger

thanx bruno. you have answered my question .but...

thanx bruno. you have answered my question .but there is one more question.
if my model needs to be solved as transient to reach a final steady state condition then does it really matter how many...

Forum: CFX

September 2, 2013, 15:07

Replies: 9

time step ?

Views: 3,189

Posted By hmasenger

thanks brunoc I will take a look at that but what...

thanks brunoc I will take a look at that but what about the inner and outer loops in a steady state problem? can you explain it a little in a simple way ?

Forum: CFX

September 2, 2013, 12:57

Replies: 9

time step ?

Views: 3,189

Posted By hmasenger

time step ?

hi dear friends
i have a dumb question but i cant fined the final answer for it in the CFX manual.
the question is"when to decrease the time step and when to increase it"
how can i estimate a...

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