What Is the Cubic Relation?

The Cubic Relation extends the non-linear constitutive relation of the Quadratic Relation by including cubic functions of the velocity gradients (see Eqn. 241). These additional terms improve the sensitivity of the K-Epsilon Model to streamline curvature and rotation.

Cubic Relation Expert Properties

Unless you are thoroughly familiar with the theoretical aspects of this model and the discretization techniques used in STAR-CCM+, we recommend that you not make any changes within the Expert category. The values in that category reflect both the model's design and discretization approaches that have been optimized for accuracy and performance. Tampering with them may diminish the effectiveness of the model.

Cnl4	The coefficient , see Eqn. 245.
Cnl5	The coefficient , see Eqn. 245.