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

applying an external force on a floating object

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 16, 2024, 11:31
Default applying an external force on a floating object
  #1
New Member
 
abdulsalam musaad
Join Date: Mar 2024
Posts: 8
Rep Power: 2
AbdoMusaad is on a distinguished road
Dear Foamers,
i have an application that i could not find a good example for on CFDonline.
i have a floating object that is allowed to move only in pitch with a lever arm from the center of rotation. and i would like to apply a torque around the center of rotation with an amplitude that is varying harmonically. I am wondering how to do that?



i am using openfoam v2312


I am thinking of using the restraints of sixDoFRigidBodyMotionCoeffs. but

these are the restraint types included in this openfoam version

linearAxialAngularSpring linearDamper linearSpring linearSpringDamper sixDoFRigidBodyMotionRestraint softWall sphericalAngularDamper sphericalAngularSpring tabulatedAxialAngularSpring



all of them are connected to implementing a spring or damper coefficients. So how can i use them to apply a force?
AbdoMusaad is offline   Reply With Quote

Old   April 23, 2024, 01:51
Default solution for future reference
  #2
New Member
 
abdulsalam musaad
Join Date: Mar 2024
Posts: 8
Rep Power: 2
AbdoMusaad is on a distinguished road
i found the solution in this link:
Vary stiffness over time - sixDoFRigidBodyMotion


my implementation for openFoam v2312 is attached.
Attached Files
File Type: zip sixDoFRigidBodyMotionNew.zip (105.9 KB, 2 views)

Last edited by AbdoMusaad; April 27, 2024 at 13:35.
AbdoMusaad is offline   Reply With Quote

Reply

Tags
dynamicmotionsolverfvmesh, external force, floating body, pto, sixdofrigidbodymotion

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
How to take into account buoyancy force for floating object ? FloB OpenFOAM Running, Solving & CFD 3 December 6, 2022 10:31
can't find object when reconstructPar marangoni bc wqsn123 OpenFOAM Post-Processing 3 February 1, 2022 11:06
[OpenFOAM.org] Instructions to install OpenFOAM-2.4.x on CentOS-6.10 redbullah OpenFOAM Installation 9 September 7, 2019 17:18
ActuatorDiskExplicitForce in OF2.1. Help be_inspired OpenFOAM Programming & Development 10 September 14, 2018 11:12
Applying a moment to an object daveatstyacht OpenFOAM 0 July 27, 2010 04:35


All times are GMT -4. The time now is 10:57.