Aims & Learning Objectives:
To introduce the full Navier-Stokes equations and give the physical significance of each term in the equations. To introduce the student to CFD techniques appropriate for practical engineering applications (the finite-volume method). To introduce the student to the use of commercial CFD packages, the importance of validation and the need for caution in applying the underlying models for turbulent flow.
After taking this unit the student should be able to: Use CFD codes to compute 2D flows and understand the physical significance of the solutions. Compute rates of heat transfer and shear stress. Set up viscous fluid flow and heat transfer problems using a commercial code (with regular and possibly body-fitted grids), and extract features of the computed solutions for interpretation and validation.
Content:
LAMINAR FLOW: Navier-Stokes equations and energy equations; physical significance of the terms. Discretisation and solution of the non-linear equations using the finite-volume method. Pressure-velocity coupling. Alternative mesh structures. TURBULENT FLOW: Introduction to computational models of turbulence. Application to the computation of developing boundary layers and recirculation flows. Limitations of the current generation of turbulence models.
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