Streamwise upwind algorithm for computing unsteady transonic flows past oscillating wings

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

doi:10.2514/3.10789

Streamwise upwind algorithm for computing unsteady transonic flows past oscillating wings

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

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

A streamwise upwind algorithm has been extended 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 conservativeimplicit methods, with the results obtained from a central-difference method, and also with experimental data. The efficiency and practicality of the temporally nonconservative implicit solver are illustrated. Results to show the robustness and accuracy of the upwind method for unsteady computations compared to the central-difference method are presented.

Original language	English
Pages (from-to)	1668-1677
Number of pages	10
Journal	AIAA journal
Volume	29
Issue number	10
DOIs	https://doi.org/10.2514/3.10789
Publication status	Published - 1991 Oct
Externally published	Yes

ASJC Scopus subject areas

Aerospace Engineering

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abstract = "A streamwise upwind algorithm has been extended 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 conservativeimplicit methods, with the results obtained from a central-difference method, and also with experimental data. The efficiency and practicality of the temporally nonconservative implicit solver are illustrated. Results to show the robustness and accuracy of the upwind method for unsteady computations compared to the central-difference method are presented.",

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AB - A streamwise upwind algorithm has been extended 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 conservativeimplicit methods, with the results obtained from a central-difference method, and also with experimental data. The efficiency and practicality of the temporally nonconservative implicit solver are illustrated. Results to show the robustness and accuracy of the upwind method for unsteady computations compared to the central-difference method are presented.

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