On the edge of the flow diagnosis diagram where ωT = 0, the shear amplitude A is YT, the amount of shear in one relaxation time. We can inch away from the Newtonian corner by using slow viscoelastic flow approximations, but as we have seen in the case of tube flow, this can become very laborious. We need a constitutive equation that deals directly with steady shearing motions at arbitrary shear rates.
KeywordsShear Rate Momentum Equation Centrifugal Force Slip Surface Potential Flow
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