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Old   August 21, 2005, 07:43
Default unsteady DPM
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Thiyagarajan
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Hi all,

i want to do an unsteady DPM trajectory calculation while the continuous phase flow is steady.i gave all neccessary inputs.The injection starts and ends in one DPM iteration,but i want injection in every DPM iteration. how to get that? thanks for your time. regards Thiyaga
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Old   August 21, 2005, 09:21
Default Re: unsteady DPM
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YZ
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I have never done this, but I have an impression that UDF is able to do that by some kinds of initiation? You probably could go to UDF help for this.
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Old   August 21, 2005, 09:26
Default Re: unsteady DPM
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YZ
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actually I myself have a question about your work: You meant particle tracking in a steady flow? The "steady" and "unsteady" in Fluent is only refering to the continuous phase as I understood? I think Fluent needs to expand its DPM help.
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Old   August 21, 2005, 13:36
Default Re: unsteady DPM
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Thiyagarajan
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hi YZ,

thanks for ur reply. actually, i am modelling an airfilter, i want to 'trap' sand particle on filter face.so i decided to use unsteady particle injection while the continuos phase remains steady.i wouldlike to collect the sand particles in every DPM injection.but the injection stops with one DPM iteration,how to get injection for every DPM iteration. thanks for ur time.. regards Thiyaga.
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Old   August 23, 2005, 14:06
Default Re: unsteady DPM
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YZ
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It seems Fluent 6.2.16 has some capabilities to control the injection, but I am not 100% sure. best,
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