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Nonreflecting boundary conditions for the complete unsteady transonic small-disturbance equation (1985)

Seidel, D. A. ; Whitlow, W., Jr.

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Publication Date: 2011-08-19

Description: Nonreflecting far-field boundary conditions that are consistent with the complete transonic small-disturbance (TSD) equations are derived. They are implemented in a new code for solving the complete TSD equation and are tested for a harmonically oscillating NACA 64A010 airfoil in transonic flow and for a flat-plate airfoil with a pulse in the angle of attack. Using the new boundary conditions on a relatively small grid, solutions for the airfoil that are obtained that agree with large-grid calculations, resulting in a 44 percent savings in computer time. Frequency responses for the flat plate show that most of the disturbances incident on the computational boundaries are absorbed by the boundary conditions.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: AIAA Journal (ISSN 0001-1452); 23; 315-317

Format: text

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