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LES: fully developed flow at the inlet of a duct

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Old   June 12, 2008, 11:28
Default LES: fully developed flow at the inlet of a duct
  #1
cfd novice
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Hi guys

I wanna impose fully developed flow at the inlet of a duct. I do not have much time so what will be best option to do that. All kind of ideas are welcome. Thanks in advance for your help.

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Old   June 12, 2008, 15:32
Default Re: LES: fully developed flow at the inlet of a du
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Carlos
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Hi!

Take a look at tutorial n9
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Old   June 12, 2008, 15:50
Default Re: LES: fully developed flow at the inlet of a du
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cfd novice
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No unfortunately that wont help because that tutorial is for circular pipes. I have a rectangular duct. Any idea how to write an expression for a duct of 2*0.5*0.5? Inlet velocity is 2 m s^-1. Thank you

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Old   June 14, 2008, 00:54
Default Re: LES: fully developed flow at the inlet of a du
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Rogerio Fernandes Brito
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make a simulation with a long tube! after that, take the profile of velocity at oultlet and use as the inlet for the nest simulation! how about it?
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Old   June 14, 2008, 07:40
Default Re: LES: fully developed flow at the inlet of a du
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cfd.novice
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Good idea Rogerio but unfortunately I do not have time to run a simulation in very long. If I use periodic boundaries that too would give me fully developed flow. Only problem is that I am being able to use periodic boundaries for compressible flow. Any idea how to sort this issue. Thank you
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Old   June 14, 2008, 07:55
Default Re: LES: fully developed flow at the inlet of a du
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Rogerio Fernandes Brito
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if u want, i can make this type of simulation! My MSN is rogeriobrito2007@hotmail.com

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Old   June 14, 2008, 13:59
Default Re: LES: fully developed flow at the inlet of a du
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Ahmed
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Hi Rogerio

I have added you but you are not online right now. I hope to get in touch with you soon.

Ahmed
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