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Old   March 7, 2012, 20:24
Default Question about Fluent DPM erosion model
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Dezhi Zheng
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Hi, Guys,
I am currently working on an erosion problem in the pump. I tried DPM erosion model exactly follow the tutorial, but seems I can't get the mass balance for particle at inlet and outlet. the number of particle insert is larger than the particle escaped. Also, there are some particle shows in "imcomplete". it is like some particles have been lose track.

Also, in the erosion tutorial, they use velocity inlet type. When I change it to mass flow inlet, the case stopped when DPM iteration starts.

Could any one help me out about this question? Thanks.
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Old   June 20, 2014, 06:58
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Xin Yang
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Quote:
Originally Posted by zdz198728 View Post
Hi, Guys,
I am currently working on an erosion problem in the pump. I tried DPM erosion model exactly follow the tutorial, but seems I can't get the mass balance for particle at inlet and outlet. the number of particle insert is larger than the particle escaped. Also, there are some particle shows in "imcomplete". it is like some particles have been lose track.

Also, in the erosion tutorial, they use velocity inlet type. When I change it to mass flow inlet, the case stopped when DPM iteration starts.

Could any one help me out about this question? Thanks.
Mass balance of erosion:
injection flow rate= accretion rate+escape rate+imcomplete.
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