- **OpenFOAM Programming & Development**
(*http://www.cfd-online.com/Forums/openfoam-programming-development/*)

- - **A question about Jasak's Phd thesis**
(*http://www.cfd-online.com/Forums/openfoam-programming-development/118275-question-about-jasaks-phd-thesis.html*)

A question about Jasak's Phd thesis1 Attachment(s)
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. |

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 |

1 Attachment(s)
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！！! |

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 |

All times are GMT -4. The time now is 14:52. |