Application of a streamwise upwind algorithm for unsteady transonic computations over oscillating wings

Shigeru Obayashi; Guru P. Guruswamy; Peter M. Goorjian

Application of a streamwise upwind algorithm for unsteady transonic computations over oscillating wings

Shigeru Obayashi, Guru P. Guruswamy, Peter M. Goorjian

Research output: Contribution to conference › Paper › peer-review

Abstract

A new streamwise upwind algorithm has been derived to compute unsteady flows with a moving grid system and applied to compute flows over oscillating wings at transonic Mach numbers. Comparisons have been made between results obtained from this upwind algorithm, using both temporally nonconservative-and conservative-implicit methods, with the results obtained from a central-difference method, and also with experimental data. The results show (1) the efficiency and practicality of the temporally nonconservative implicit solver and (2) the robustness and accuracy of the upwind method for unsteady computations compared to the central-difference method.

Original language	English
Pages	792-808
Number of pages	17
Publication status	Published - 1990 Jan 1
Externally published	Yes
Event	Flight Simulation Technologies Conference and Exhibit, 1990 - Dayton, United States Duration: 1990 Sep 17 → 1990 Sep 19

Other

Other	Flight Simulation Technologies Conference and Exhibit, 1990
Country	United States
City	Dayton
Period	90/9/17 → 90/9/19

ASJC Scopus subject areas

Engineering(all)

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title = "Application of a streamwise upwind algorithm for unsteady transonic computations over oscillating wings",

abstract = "A new streamwise upwind algorithm has been derived to compute unsteady flows with a moving grid system and applied to compute flows over oscillating wings at transonic Mach numbers. Comparisons have been made between results obtained from this upwind algorithm, using both temporally nonconservative-and conservative-implicit methods, with the results obtained from a central-difference method, and also with experimental data. The results show (1) the efficiency and practicality of the temporally nonconservative implicit solver and (2) the robustness and accuracy of the upwind method for unsteady computations compared to the central-difference method.",

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year = "1990",

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T1 - Application of a streamwise upwind algorithm for unsteady transonic computations over oscillating wings

AU - Obayashi, Shigeru

AU - Guruswamy, Guru P.

AU - Goorjian, Peter M.

PY - 1990/1/1

Y1 - 1990/1/1

N2 - A new streamwise upwind algorithm has been derived to compute unsteady flows with a moving grid system and applied to compute flows over oscillating wings at transonic Mach numbers. Comparisons have been made between results obtained from this upwind algorithm, using both temporally nonconservative-and conservative-implicit methods, with the results obtained from a central-difference method, and also with experimental data. The results show (1) the efficiency and practicality of the temporally nonconservative implicit solver and (2) the robustness and accuracy of the upwind method for unsteady computations compared to the central-difference method.

AB - A new streamwise upwind algorithm has been derived to compute unsteady flows with a moving grid system and applied to compute flows over oscillating wings at transonic Mach numbers. Comparisons have been made between results obtained from this upwind algorithm, using both temporally nonconservative-and conservative-implicit methods, with the results obtained from a central-difference method, and also with experimental data. The results show (1) the efficiency and practicality of the temporally nonconservative implicit solver and (2) the robustness and accuracy of the upwind method for unsteady computations compared to the central-difference method.

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M3 - Paper

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T2 - Flight Simulation Technologies Conference and Exhibit, 1990

Y2 - 17 September 1990 through 19 September 1990

ER -

Application of a streamwise upwind algorithm for unsteady transonic computations over oscillating wings

Abstract

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ASJC Scopus subject areas

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