This chapter presents an overview of the theory and the governing equations for the mathematical model and Ansys Fluent’s capabilities to predict melt and dry spinning processes.

• 22.1. Introduction
• 22.2. Governing Equations of Fiber Flow
• 22.3. Discretization of the Fiber Equations
• 22.4. Numerical Solution Algorithm of Fiber Equations
• 22.5. Residuals of Fiber Equations
• 22.6. Coupling Between Fibers and the Surrounding Fluid
• 22.7. Fiber Grid Generation
• 22.8. Correlations for Momentum, Heat and Mass Transfer
• 22.9. Fiber Properties
• 22.10. Solution Strategies