Introduction to Computational Fluid Dynamics

Exercises

  1. Derive expressions for ( i=1, 2, 3 and j=1, 2, 3) for a 3D curvilinear grid.

  2. Using Equations 6.24 and 6.27, express dA i and dV for a 3D curvilinear grid.

  3. Starting with the p ? equation in Cartesian coordinates (see Chapter 5), derive Equation 6.39. Identify the neglected terms in Equation 6.39 and explain how the effect of these terms can be recovered in a predictor-corrector fashion.

  4. Analogous to Equation 6.42, derive an expression for , P.

  5. Derive Equations 6.91, 6.92, and 6.93.

  6. Derive Equation 6.113.

  7. Using Equations 6.121 and 6.122, derive explicit symmetry boundary conditions for u 1,B and u 2,B.

  8. Using Equations 6.125 and 6.126, derive explicit exit boundary conditions for u 1,B and u 2,B.

  9. A boundary receives radiant influx . Derive expressions for Su and Sp for the node adjacent to this boundary and evaluate T B .

  10. Derive an exact expression for by control-volume discretisation over cell-face control volume c 1 c 2 c 3 c 4 shown in Figure 6.13.

  11. Show that .

  12. Verify Equations 6.139 and 6.140 in the evaluation of .

  13. Starting with Equation 6.62, derive an expression for total convective-diffusive transport at the cell face of a tetrahedral element.

  14. In Exercise 13, if the cell face were a boundary face, how would you determine the tangent vector if is along PP 2?

  15. Carry out discretisation of convection terms using a TVD...

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