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How to calculate Transition onset and length??

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Old   December 20, 2007, 12:01
Default How to calculate Transition onset and length??
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Mohammad Faridul Alam
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Hi, can anybody tell me how will I calculate transition onset location and transition length in CFX-post?

I have used Gamma Theta Model.

Thanks Farid
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Old   December 20, 2007, 17:58
Default Re: How to calculate Transition onset and length??
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Glenn Horrocks
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Hi,

Are you trying to see where the simulation has predicted the transition points? Look at the turbulence intermittency variable. 0=laminar, 1=turbulent.

Glenn Horrocks
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Old   December 21, 2007, 04:07
Default Re: How to calculate Transition onset and length??
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Mohammad Faridul Alam
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Hi Glenn, Thanks. yes, I am trying to predict the transition location.

do I need to see the contour of turbulence intermittency??

Can't I make any plot of Turbulence Intermittency Vs. X?

Farid

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Old   December 25, 2007, 06:17
Default Re: How to calculate Transition onset and length??
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Glenn Horrocks
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Hi,

Turb Int. is a scalar variable like any other. It can be viewed on a surface, as an isosurface, a contour on a cross section plane or may other ways. You can make a plot of turb int versus X by exporting the turb int and X location along any object, such at a line, surface or cross section plane.

Glenn Horrocks
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