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Comparative study of computational efficiency of two LU schemes for non-equilibrium reacting flows (1990)

Tsai, Y.-L. Peter ; Hsieh, K.-C.

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Publication Date: 2019-06-28

Description: The systems of equations governing chemically nonequilibrium flows are solved numerically by two lower-upper(LU) algorithms, namely, LU-SSOR (Yoon and Jameson, 1987) and LU-SW (Steger and Warming, 1981). The methods of flux-Jacobian splitting differentiate the two LU algorithms. The LU-SSOR gives a simpler implicit operator with less temporal damping, while the LU-SW converges faster but requires more computation for each iteration. Relative efficiencies and mutual merits of these two LU algorithms are compared. The results show that LU-SW with upwind-differenced right-hand-side gives the best convergence.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: AIAA PAPER 90-0396

Format: text

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