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complex viscosity on CFD

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Old   April 16, 2007, 00:26
Default complex viscosity on CFD
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Hello I am trying to planning some of my PhD work. Does anybody know if the linear viscoelastic properties (complex viscosity or storage modulus and loss modulus) that are measured in a SAOS test (Small Amplitude Oscillating Shear), can be useful to predict the fluid behavior in terms of navier stokes equations (CFD software)? I have found in the literature just an "empirical" relation between the complex viscosity and the viscosity (the CoxMerz rule). I do not know if a CFD code has a better convertion between the shear rate and the frecuency when you define the material function. Does anybody knows it?

thanks a lot FJ

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