************************* **PTT Epsilon parameter** ************************* :: PTT Epsilon parameter = {model_name} ----------------------- **Description / Usage** ----------------------- This card is used in the Phan-Thien Tanner model in the nonlinear stress terms. The card should be included in the input when the option selected for the *Polymer Constitutive Equation* card is **PTT**. Definitions of the input parameters are as follows: +-----------------+------------------------------------------------------------------------------------------------------------+ |**CONSTANT** |Name of the model for PTT Epsilon parameter. | | | | | | * - the value of the PTT Epsilon parameter. | +-----------------+------------------------------------------------------------------------------------------------------------+ This card does not have to be present for constitutive equations other than **PTT**. ------------ **Examples** ------------ The following is a sample card that sets the PTT Epsilon parameter to 0.1: :: PTT Xi parameter = CONSTANT 0.10 ------------------------- **Technical Discussion** ------------------------- No Discussion.