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Particle's residence time

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Old   May 9, 2005, 01:45
Default Particle's residence time
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Huong
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Hi,

I just wonder how we can define a residence time of a particle enter and come out of the tank?

Thank you so much
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Old   May 9, 2005, 23:37
Default Re: Particle's residence time
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harish
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You can define particle residence time from an approximate solution of force balance using leapfrog method.

F=ma v(n+0.5)=v(n)+a dt x(n+1)=x(n) + v(n+0.5) dt

-Harish
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Old   May 10, 2005, 00:45
Default Re: Particle's residence time
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Huong
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Dear Harish,

THe leapfrog method, is it in Fluent? I just wonder if I have a tank and would like to measure resident time of a particle spending in that tank, what would we do in FLuent?
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Old   June 2, 2005, 11:18
Default Re: Particle's residence time
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General interest
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Try using a scalar and plotting the age of the scalar. It's standard stuff in Fluent. As is particle tracking.

I'm sure all this is in the manuals!
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