Leading-edge vortex solutions with large total pressure lossesComputations are presented for a Lambda = 75 deg delta wing in a supersonic freestream under two conditions which lead to leading-edge vortices. For one condition, analysis of the computed vortical flow reveals a closed streamline in the core. From varying computational parameters, it appears that this is due to truncation error of the convective derivatives. For the other condition, comparisons are made with wind-tunnel data, and good agreement is noted for pitot pressure distributions, flow angles on the symmetry plane, and the position of an embedded shock. Many of the aerodynamic parameters are shown to be insensitive to grid spacing.
Document ID
19870035098
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Murman, Earll M. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Powell, Kenneth G. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Goodsell, Aga M. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Landahl, Marten T. (MIT Cambridge, MA, United States)