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forceCoeffs (OpenFOAM 2.2.0) gave another values of Cd in comparison results2.2.1 !

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March 15, 2013, 10:12	forceCoeffs (OpenFOAM 2.2.0) gave another values of Cd in comparison results2.1.1 !	#1
lavrov New Member Alexander Lavrov Join Date: Jun 2012 Location: Lisbon, Portugal Posts: 9 Rep Power: 14	Deal all, I solved very simple problem: laminar cylinder (Re=20) in flow using OpenFOAM 2.1.1. I used blockMesh instrument. (number of cells: 78000) The cylinder is divided into 8 parts. I received Cd which coincides with experiment. Today I run the same problem on OpenFOAM 2.2.0. The Cd is approximately 4 times smaller. It differs from my previous calculations and from experiment. I suppose that something have change in the rules concerning forceCoeffs. But I did not find answer in 2.2.0 manual. Please help me! Thank you very much in advance. Alexander. Last edited by lavrov; March 15, 2013 at 11:16.

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2.1.1, 2.2.0, cylinder, differences, laminar

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