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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: ifsibot

Forum: FLUENT May 5, 2009, 16:24

Replies: 10 Some questions for steady and unstedy state Views: 1,820 Posted By ifsibot :) no, either: 1- do st st, then do unst.... :) no, either: 1- do st st, then do unst. st. and use st. st. as initial condition 2- start from unst. st. by using time ramping, v_inlet = 0-->2m/s I prefer 2, choice is yours.

Forum: FLUENT May 5, 2009, 14:33

Replies: 10 Some questions for steady and unstedy state Views: 1,820 Posted By ifsibot If I want to run an unsteady model, first I will... If I want to run an unsteady model, first I will make sure that everything is fine by running a st. st. When the results are fine, in flow problems, I will ramp the flow velocity slowly. It gives...

Forum: FLUENT May 5, 2009, 14:12

Replies: 10 Some questions for steady and unstedy state Views: 1,820 Posted By ifsibot not that way. What I meant was to divide your... not that way. What I meant was to divide your time scale. 1e-2s, 1e-3s,... If you have a cylinder, let's say it has a strouhal number of 0.2 (it is different for hydrofil), then: St = f.l/v...

Forum: FLUENT May 5, 2009, 12:21

Replies: 10 Some questions for steady and unstedy state Views: 1,820 Posted By ifsibot It may be true or not. It is possible that... It may be true or not. It is possible that your solution of unst. st. is not correct, due to: - Not fine enough mesh, that can not resolve the local effects: Do a mesh study - Not small enough...

Forum: FLUENT May 5, 2009, 11:49

Replies: 10 Some questions for steady and unstedy state Views: 1,820 Posted By ifsibot Depends what you mean by unsteady effects. ... Depends what you mean by unsteady effects. One case can be the vortex shedding regime. You can have a steady state simulation of a cylinder in the flow. However, in case of vortex shedding,...

Showing results 1 to 5 of 5

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