*********************************** Disable Viscosity Sensitivities *********************************** :: Disable Viscosity Sensitivities = {yes | no} ----------------------- Description / Usage ----------------------- This optional card permits the analyst to omit the sensitivities of a shear-thinning viscosity model with respect to shear rate from the Jacobian.Valid options for this card are yes Omit the sensitivities of a shear-thinning viscosity model with respect to shear rate from the Jacobian no Form the complete Jacobian. Currently, this card will have an effect only when using the following viscosity models: **POWER_LAW, CARREAU, BINGHAM** (see the *Liquid Constitutive Equation* card). The default value is **no**. ------------ Examples ------------ The following is a sample card: :: Disable Viscosity Sensitivities = yes ------------------------- Technical Discussion ------------------------- It has been observed that when these terms are included for very highly shear-thinning models the result can be non-convergence. In such situations, disabling these terms can often result in a convergent answer but at a convergence rate far less than the usual quadratic.