************************** **Shear Rate Diffusivity** ************************** :: Shear Rate Diffusivity = {model_name} ----------------------- **Description / Usage** ----------------------- This card is used to specify the coefficient for the shear-rate gradient term when **HYDRO** is specified in the *Diffusivity* card. Definitions of the input parameters follow for the {model_name} options **CONSTANT** and **LINEAR** based on the model: .. figure:: /figures/447_goma_physics.png :align: center :width: 90% +----------------------+-------------------------------------------------------------------------------------+ |**CONSTANT** |Name of the model for constant shear rate diffusivity. | | | | | | * - an integer designating the species equation. | | | * - Dc when there is no concentration dependency. | +----------------------+-------------------------------------------------------------------------------------+ |**LINEAR** |Name of the model in which shear rate diffusivity is a linear function of | | |concentration. | | | | | | * - an integer designating the species equation. | | | * - kc when the diffusivity is a linear function of concentration. | +----------------------+-------------------------------------------------------------------------------------+ ------------ **Examples** ------------ The following is a sample input card: :: Shear Rate Diffusivity = CONSTANT 0 0. ------------------------- **Technical Discussion** ------------------------- Please refer to the technical discussion given under **HYDRO** section of the *Diffusivity* card. -------------- **References** -------------- No References.