CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Body force in fvOptions in interFoam

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 27, 2022, 04:55
Default Body force in fvOptions in interFoam
  #1
New Member
 
Join Date: Mar 2020
Posts: 16
Rep Power: 4
Geb1313 is on a distinguished road
Hello Foamers,
I am thinking to model a dam break using interFoam solver. The dam has a rectangular shape as most of the dam break tutorials, but with a solid rectangular block(constant density) on the top of it. As per my understanding the impact of the block on cells beneath it is a pressure force of magnitude density*gravity* depth of the block acting on the vertical surface area(xy plane) of the cells.

Now my question is how can add this force as a coded source.

My first thought was: providing the force as P = (0 0 rho*g*h) and to be included into the momentum equation it should be force per unit volume. I was lost after this. The actual dimension of the force P is dimension of pressure. I have to change it to weight (force) by: F = P &mesh.sf(). And dividing F by mesh.V() provides the dimension required. However, I am not sure if this is possible.

Any recommendation please?
Geb1313 is offline   Reply With Quote

Old   June 23, 2022, 14:39
Default
  #2
Member
 
Mahmoud
Join Date: Nov 2020
Location: United Kingdom
Posts: 37
Rep Power: 4
Mahmoud Abbaszadeh is on a distinguished road
Quote:
Originally Posted by Geb1313 View Post
Hello Foamers,
I am thinking to model a dam break using interFoam solver. The dam has a rectangular shape as most of the dam break tutorials, but with a solid rectangular block(constant density) on the top of it. As per my understanding the impact of the block on cells beneath it is a pressure force of magnitude density*gravity* depth of the block acting on the vertical surface area(xy plane) of the cells.

Now my question is how can add this force as a coded source.

My first thought was: providing the force as P = (0 0 rho*g*h) and to be included into the momentum equation it should be force per unit volume. I was lost after this. The actual dimension of the force P is dimension of pressure. I have to change it to weight (force) by: F = P &mesh.sf(). And dividing F by mesh.V() provides the dimension required. However, I am not sure if this is possible.

Any recommendation please?

Hi

Have you got an answer for this problem?
Mahmoud Abbaszadeh is offline   Reply With Quote

Reply

Tags
fvoptions, interfoam

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
The CoP Does not exist: Validating Aerodynamic forces through a "line of action" ds4719 Main CFD Forum 14 February 18, 2022 19:05
Different calc for lift between: force coefficient report and 6-DOF body force report hxax STAR-CCM+ 3 January 16, 2020 11:08
ActuatorDiskExplicitForce in OF2.1. Help be_inspired OpenFOAM Programming & Development 10 September 14, 2018 12:12
Implementing surface force in interFoam traens OpenFOAM Programming & Development 2 July 17, 2017 05:14
how to include body force in cfx selvam R.P CFX 4 November 25, 2005 05:01


All times are GMT -4. The time now is 17:57.