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May 23, 2013, 23:51 |
A question about Jasak's Phd thesis
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#1 |
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Beijing, China
Posts: 844
Rep Power: 18 |
Hi guys,
In Jasak's thesis Page 144.It says: (see the image equation 1 2 3).I dont know how can I get equation 3 from equation 2. AFAIK,in SIMPLE algorithm,I can get equations similarly(from eq.4 to eq.5).So back to Jasak's thesis , should it be equation 6?Where is the diffusion term in his thesis? Thanks in advance. |
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May 24, 2013, 07:40 |
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#2 |
Senior Member
Paulo Vatavuk
Join Date: Mar 2009
Location: Campinas, Brasil
Posts: 200
Rep Power: 18 |
Hi Forrest,
I think that what Dr. Jasak means is that the convection term can be calculated from the sum of the flow times velocity at the faces, and that will result in a contribution to ap and the an's, how this contribution will be effectively calculated depends on the convection scheme that is used. Best Regards, Paulo |
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May 26, 2013, 23:19 |
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#3 | |
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Beijing, China
Posts: 844
Rep Power: 18 |
Quote:
Thanks for your answer,but Im still confused.I write it in this IMAGE.In the last equation.There is no diffusive term.Please help me to check it out.Thanks!!! |
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May 27, 2013, 06:36 |
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#4 |
Senior Member
Paulo Vatavuk
Join Date: Mar 2009
Location: Campinas, Brasil
Posts: 200
Rep Power: 18 |
Hi Forrest,
The diffusive term certainly have an influence that must be included in ap and the an's. The ap and the an's from equation 3 of your first post are not the same as the ones in the third eq of your second post. The equations 1, 2 and 3 of your first post are for an hypothetical situation for steady flow without diffusion and other sources. Best Regards, Paulo Last edited by vatavuk; May 28, 2013 at 06:17. Reason: small typos |
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