A computational and experimental investigation of a delta wing with vertical tailsThe flow over an aspect ratio 1 delta wing with twin vertical tails is studied in a combined computational and experimental investigation. This research is conducted in an effort to understand the vortex and fin interaction process. The computational algorithm used solves both the thin-layer Navier-Stokes and the inviscid Euler equations and utilizes a chimera grid-overlapping technique. The results are compared with data obtained from a detailed experimental investigation. The laminar case presented is for an angle of attack of 20 deg and a Reynolds number of 500,000. Good agreement is observed for the physics of the flow field, as evidenced by comparisons of computational pressure contours with experimental flow-visualization images, as well as by comparisons of vortex-core trajectories. While comparisons of the vorticity magnitudes indicate that the computations underpredict the magnitude in the wing primary-vortex-core region, grid embedding improves the computational prediction.
Document ID
19930064202
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Krist, Sherrie L. (NASA Langley Research Center Hampton, VA, United States)
Washburn, Anthony E. (Vigyan, Inc. Hampton, VA, United States)
Visser, Kenneth D. (National Research Council Hampton, VA, United States)