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Experiments on the ground vortex formed by an impinging jet in cross flowAn inclined jet impinging on the ground creates a wall flow that spreads radially from the point of impingement. If a cross-flow is introduced, the upstream component of the wall flow will separate from the ground and create what has been termed the 'ground vortex.' The ground vortex has been shown to have a significant impact on aircraft aerodynamics and is one of the major contributors to hot gas ingestion. The paper discusses a recent study which included a generic wing-body configuration for assessing the impact of the ground vortex on configuration aerodynamics. Wind tunnel tests using fixed ground boards, moving ground belts, and moving model tests are discussed. The emphasis of the data is macroscopic, i.e. forward location of the vortex, effects of ground height, etc.
Document ID
19940023513
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Blake, William B.
(Wright Lab. Wright-Patterson AFB, OH, United States)
Stewart, Vearl R.
(KSA Technology Columbus, OH., United States)
Date Acquired
August 16, 2013
Publication Date
November 1, 1993
Publication Information
Publication: AGARD, Computational and Experimental Assessment of Jets in Cross Flow
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
94N28016
Funding Number(s)
CONTRACT_GRANT: F33615-89-C-3611
Distribution Limits
Public
Copyright
Other
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