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December 11, 2017, 03:11	calculating forces	#1
alimea Senior Member A. Min Join Date: Mar 2015 Posts: 308 Rep Power: 12	Hi all I saw in forces code that shear stress is calculated by: shear stress = - mugama in code: -rho()nudev(twoSymm(fvc::grad(U))) what is the minus in this formula? Now I want to calculate forces for viscoelastic fluid. should I write: total shear stress = -tau - mugama that tau is polymeric stress. Thanks

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forces, forces and force coeff., shear stress

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