CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Which is the most efficient way to compute force coefficients?

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 12, 2014, 00:17
Default Which is the most efficient way to compute force coefficients?
New Member
Leonardo Antonio de Araujo
Join Date: Feb 2014
Location: Porto Alegre
Posts: 17
Rep Power: 12
araujo is on a distinguished road
Send a message via Skype™ to araujo
Hello all,

in the case of my research, I'm using direct numerical simulation to compute the flow around a cylinder for the laminar case (Reynolds around ~ 100) through high order finite difference scheme (6th order). The cylinder is subjected to one-degree-of-freedom vortex-induced vibration (VIV) in the transverse direction to the flow (y axis).

Right now, I compute the aerodynamic/hydrodynamic coefficients (drag and lift coefficient) through the conservation of momentum equation which uses a control volume (0.75D distanced to each side of the cylinder). Due to the cylinder displacement, there is a lot of noise in the time signal of the coefficients. I'm using a cartesian mesh which isn't conformed to the cylinder.

Is this the most efficient way that minimizes numerical error? For example, a paper by Shiels (2001) uses a vorticity scheme (referred on link). I suppose that integrating along the surface of the cylinder would increase the error.

Thanks in advance for any highlights
araujo is offline   Reply With Quote


cylinder, drag, force coefficients, lift, viv

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
ActuatorDiskExplicitForce in OF2.1. Help be_inspired OpenFOAM Programming & Development 10 September 14, 2018 11:12
Compute drag force on STL file matteo.monti OpenFOAM Running, Solving & CFD 0 November 17, 2014 10:59
Compute drag force on a mesh (complete beginner!) matteo.monti Main CFD Forum 0 October 10, 2014 20:07
Sectional force coefficients tfuwa OpenFOAM Post-Processing 1 June 27, 2013 06:49
Force can not converge colopolo CFX 13 October 4, 2011 22:03

All times are GMT -4. The time now is 23:17.