# how to calculate volume fraction of particles from

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 April 23, 2001, 15:12 how to calculate volume fraction of particles from #1 x. simth Guest   Posts: n/a Sponsored Links Dear Friends, I have a question. Now I am using Fluent 5 to simulate particle flow in a pipe. The Discrete Phase Modelling is used to simulate the particle traces. Please tell me how I can get particle volume fraction in the pipe out of Fluent 5. Thanks very much for your help. Sincerely yours, X Smith

 April 25, 2001, 07:54 Re: how to calculate volume fraction of particles #2 eric Guest   Posts: n/a Hi! You can make /display/contour/dpm/dpm-concentration for a local contour If you want a global value, make /report/average/dpm-concentration

 April 26, 2001, 15:40 Re: how to calculate volume fraction of particles #3 Lanre Guest   Posts: n/a First, all your particles must exit the computational domain. The DPM model can not be used to give you solids hold-up in a batch process. Use the Report-->Discrete Phase--> Sample.. (sample planes) to write out a .dpm file. Use Report-->Discrete Phase-->Histogram to read the .dpm file, plot time, get the mean residence time of the particles crossing your outlet boundary. Volume of particles = mass of DPM flow*residence time/solids density Volume of fluid zone(s) (from Report-->Volume Integrals) Solids hold-up = Volume of particles/Volume of fluid zone(s)

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