The artificial compressibility method is briefly reviewed and the effect of different forms of the artificial viscosity are studied. Successful finite element solutions of transonic airfoil problems are presented. Iterative procedures including VLSOR, Zebroid, fast solver, firstand second-degree methods, and variable acceleration parameters such as preconditioned steepest descent and conjugate gradient are discussed and necessary modifications for transonic flow computations by finite elements are implemented leading to fast, reliable, and efficient calculations.
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Habashi et al. (1982) studied this question.
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