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February 26, 2006, 03:40 |
RMS velocity
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#1 |
Guest
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hello everybody
Is it possible to get the value Root mean Square(RMS ) velocity of fluid in CFX post please help me with regards user |
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February 26, 2006, 03:54 |
Re: RMS velocity
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#2 |
Guest
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Are you talking about steady- or transient-flow? Try giving a bit more details here...
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February 26, 2006, 08:26 |
Re: RMS velocity
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#3 |
Guest
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hello thanks for replying i am talking abt transient flow i want to get the value of the normal and shear stress, for that i am trying to get root mean squre velocity
with regards user |
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February 27, 2006, 12:37 |
Re: RMS velocity
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#4 |
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Just enter an expression for the root mean square. For any variable, say Phi
RMS Phi = sqrt(sum(Phi^2)) Simple. |
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February 27, 2006, 19:52 |
Re: RMS velocity
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#5 |
Guest
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Hi An other way to get the RMS is to include a transient statistic. You can do this on the output control panel. regards eike
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February 27, 2006, 22:15 |
Re: RMS velocity
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#6 |
Guest
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Sorry, missed the fact that this was transient. Disregard my suggestion. Eike has the right idea.
-Robin |
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February 27, 2006, 22:54 |
Re: RMS velocity
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#7 |
Guest
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Eike is right. If you have already run the solver, consider output the variable vs time and calculate rms value manually in Excel or Matlab or any other software that may suit you. You can also write a small program using command window if you know how.
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February 28, 2006, 03:19 |
Re: RMS velocity
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#8 |
Guest
Posts: n/a
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hello Robin,Elike and TB
thanks for taking more effort let me know how do i include RMS in output control panel i thing i have to include the Root mean square option in trantient statics is it correct or not please help me user |
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