|
[Sponsors] |
January 26, 2022, 00:29 |
Strongly FSI scheme in OF
|
#1 |
Member
WY
Join Date: Mar 2020
Posts: 36
Rep Power: 6 |
Hi, I use openfoam to study a 2-way FSI problem, i.e. vortex-induced-vibration (VIV) of cylinder, and my configuration is dynamic mesh + pimpleFoam + sixDoFRigidSolver + Newmark scheme. For users, it mainly involves how to define dynamicMeshDict and give appropriate settings of fluid solver. But I'm still unclear about what exactly FSI I used in my case. And unfortunately, I cannot find very systematic description about the FSI strategy in OF. So I'd like to post my questions here and hope to figure it out with the help of foamers . If I make any mistakes, please point them out.
Since the cylinder is vibrating, I apply dynamic mesh technique in OF. The dynamicMeshDict file has a template as: Code:
dynamicFvMesh dynamicMotionSolverFvMesh; motionSolverLibs ("libsixDoFRigidBodyMotion.so"); motionSolver sixDoFRigidBodyMotion; patches (cylinder); innerDistance 0.3; outerDistance 1; ... solver { type Newmark; gamma 0.5; beta 0.25; } ... (1) For the 2nd and 3rd lines, it specifies sixDoFRigidBodyMotion solver as both a mesh motion solver and a structural motion solver. I can understand the boundary motion of cylinder can be numerically derived from 6-DOF model using Newmark scheme. But what about the deformation of internal mesh between innerDistance and outerDistance? Some literature said it uses SLERP (spherical linear interpolation) to diffuse the internal mesh, but I haven't find any official documents about that. (2) How to apply strongly-coupled FSI in OF?
I am very appreciated for any suggestion! |
|
Tags |
fsi 2-way, pimplefoam, sixdofrigidbodymotion |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Error: Out of scheme heap space | SSG_NJ | FLUENT | 2 | July 24, 2021 07:31 |
Static FSI with Compressible Flow (SU2 7.1.1) | sangeet | SU2 | 3 | April 4, 2021 17:28 |
Crank Nicolson scheme implemented wrong? | rajibroy | OpenFOAM Programming & Development | 10 | May 5, 2020 10:57 |
Use of upwind scheme for interpolation of u/v | quarkz | Main CFD Forum | 6 | August 30, 2011 05:10 |
Godunov scheme | Peter | Main CFD Forum | 6 | November 27, 2009 11:51 |