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turbulent scales of forced vortex and free vortex

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Old   August 30, 2005, 04:41
Default turbulent scales of forced vortex and free vortex
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lcw
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If we examine the turbulent field of a forced vortex or a free vortex through a "magnifier", we can see the many scales of eddies existing among the vortex. I have a question: There is a Rankine combined vortex which includes an innner forced vortex and an outer free vortex. I want to know which is the larger about the scales of turbulent eddies among the two parts of the Rankine vortex. Please give me some advice to help me understand this question.

Thank you in advance.

LCW

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Old   September 1, 2005, 09:13
Default Re: turbulent scales of forced vortex and free vor
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yuan
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The accurate method i guess is to plot the spectrum of the signal. Then you can see in the frequency domain which frequency is the strongest, if you defined what is 'stronger' or 'larger'.
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Old   September 1, 2005, 13:31
Default Re: turbulent scales of forced vortex and free vor
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LCW
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Thank you first, yuan For this tipical flow, are there any theoretical method to analysis turbulent eddies scales?

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Old   September 1, 2005, 13:40
Default Re: turbulent scales of forced vortex and free vor *NM*
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lcw
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