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Old   January 21, 2006, 06:49
Default Injection in DPM
  #1
masood
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Dear Friends: when i wanna define an injection of droplets; fluent need "velocity" and "mass flow rate". I think, when i have droplet properties and its velocity,mass flow rate is determined.I mean only "velocity" or "mass flow rate" must be specified as input. Is it true? regards masood
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Old   January 21, 2006, 07:55
Default Re: Injection in DPM
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MANOJKUMAR
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You have to define velocity, mass flow rate and the co-ordinates from where you want to inject fuel.
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Old   January 21, 2006, 11:08
Default Re: Injection in DPM
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masood
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Dear MANOJKUMAR:

Thanks for reply,but i said that i think only "velocity" or "mass flow rate" is need for injection.because:

mass flow rate= density*velocity*cross sectional area

i mean when i have "velocity" no need to define "mass flow rate".

is it true?

regards
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Old   January 23, 2006, 04:41
Default Re: Injection in DPM
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HVN
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No because with the mass flow rate, you couldn't know the direction of the flow.

So you need: - the mass flow rate, - velocity in x,y,z cooridantes, - diameter of particules
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Old   January 24, 2006, 00:55
Default Re: Injection in DPM
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MANOJKUMAR
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No u must give the direction of the particle means u have to define co-ordinate and mass flow rate, and all thing which given in tha properties and also give the no of tries in the next steps. MANOJKUMAR
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