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June 19, 2016, 08:40 |
Finite Péclet Number
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#1 |
New Member
Join Date: Jun 2016
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Hi,
I've done some CFD simulations on mass-transfer inside a rectangulat duct. Literature by Shah states I should get a Sherwood number of 3.09, while I'll got a value of 3.11. I've discussed this with people, and one of them mentioned this small deviation could be due to the fact that I (supposedly) consider a case with finite Péclet number. What does this mean? What is a finite Péclet number and how can it influence my simulations? Kind regards, |
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June 19, 2016, 10:24 |
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#2 | |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,776
Rep Power: 71 |
Quote:
I don't know the meaning of the Sherwood problem but the Peclet number is a non-dimensional number appearing in the non-dimensional internal energy equation as product of the Reynolds and Prandtl number. If you assume Pe->+Inf that is supposed to be congruent to the model of Euler equations for inviscid flows (ideal fluid). In your case, assuming a finite Pe number, you consider the Navier-Stokes equations for viscous flows (real fluid). |
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June 19, 2016, 11:58 |
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#3 |
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Thank you for the clear answer
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finite péclet |
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