CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Solving momentum Equation from known pressure field

Register Blogs Community New Posts Updated Threads Search

Like Tree20Likes

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 8, 2021, 05:44
Default
  #21
Senior Member
 
sbaffini's Avatar
 
Paolo Lampitella
Join Date: Mar 2009
Location: Italy
Posts: 2,192
Blog Entries: 29
Rep Power: 39
sbaffini will become famous soon enoughsbaffini will become famous soon enough
Send a message via Skype™ to sbaffini
Quote:
Originally Posted by FMDenaro View Post
No Paolo, I am talking about the discretized Hodge decomposition at the steady state. If you provide the discrete pressure gradient that satisfies

Div Grad p = Div a*

With the correct BCs you should be able to solve for V.
OOOOOOOHHHHH.... Now I see what you all mean, you're talking about solving one steady state equation once to full convergence.

Ok, I think I agree in general terms, yet I'm not convinced that this is independent from how you treat the non-linearity of the convective term
Deep111090 likes this.
sbaffini is offline   Reply With Quote

Old   July 8, 2021, 06:25
Default
  #22
Senior Member
 
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,882
Rep Power: 73
FMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura about
Quote:
Originally Posted by sbaffini View Post
OOOOOOOHHHHH.... Now I see what you all mean, you're talking about solving one steady state equation once to full convergence.

Ok, I think I agree in general terms, yet I'm not convinced that this is independent from how you treat the non-linearity of the convective term
Yes, I am talking of solving directly the steady state equation. The discretization of the non linear term must be coincident. The source term in the pressure equation and the discretization of the momentum equation.
Deep111090 likes this.
FMDenaro is offline   Reply With Quote

Reply

Tags
cfd, lid driven cavity, simple algorithm


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Suppress twoPhaseEulerFoam energy AlmostSurelyRob OpenFOAM Running, Solving & CFD 33 September 25, 2018 18:45
Segmentation fault when using reactingFOAM for Fluids Tommy Floessner OpenFOAM Running, Solving & CFD 4 April 22, 2018 13:30
Free surface issues with interDyMFoam for hydroturbine oumnion OpenFOAM Running, Solving & CFD 0 October 6, 2017 15:05
chtMultiRegionSimpleFoam turbulent case Aditya Patil OpenFOAM Running, Solving & CFD 6 April 24, 2017 23:13
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 07:20


All times are GMT -4. The time now is 13:07.