Open Access
A Vortex Lattice Technique for Computing Ventilated Wind Tunnel Wall Interference
F L Heltsley,W E Dietz +1 more
TLDR
In this paper, a vortex lattice method has been applied to the problem of predicting the interference induced by ventilated wind tunnel walls, and the formulations of both perforated and slotted wall boundaries using the vortex-lattice method are presented.Abstract:
: A vortex lattice method has been applied to the problem of predicting the interference induced by ventilated wind tunnel walls. The formulations of both perforated and slotted wall boundaries using the vortex lattice method are presented. Wall interference effects on a single lifting line vortex for several basic wind tunnel test section configurations are compared with other theoretical results. Use of the vortex lattice method to calculate the aerodynamic characteristics of a lifting model too complex for exact analytical treatment is discussed. The surface pressure distribution on a combined wing and tail representation computed for a free stream is presented as well as those for both closed and slotted test sections to illustrate the capability of the technique.read more
Citations
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Journal ArticleDOI
Numerical Simulation of the Wind Tunnel Environment by a Panel Method
TL;DR: In this article, a simulation technique has been developed to analyze the testing environment of practical three-dimensional subsonic wind tunnels, using a higher-order panel method to simulate interference effects due to various geometrical features that are ignored in most previously published approaches.
Report on the status of a slotted wind tunnel wall representation using the vortex-lattice technique
TL;DR: A combined analytical/experimental program for development of an improved slotted wind-tunnel wall representation is described in this paper, with the effort scheduled for completion in 1977, and the vortex-lattice technique which is being used as the primary analytical tool for representing both the wind tunnel and the lifting model is discussed.
Wind-tunnel lift interference on sweptback wings in rectangular test sections with slotted side walls
J. D. Keller,R. H. Wright +1 more
TL;DR: In this article, lift interference analysis on sweptback wing in rectangular wind tunnel test section with slotted side walls was performed. But the results were limited to a single test section.
References
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ReportDOI
Boundary interference at subsonic speeds in wind tunnels with ventilated walls
M. Pindzola,C. F. Lo +1 more
TL;DR: In this article, the effect of model and wake blockage on the longitudinal and vertical velocity components along the tunnel axis leading to buoyancy and streamline-curvature corrections is investigated.
Analytical study of blockage- and lift-interference corrections for slotted tunnels obtained by the substitution of an equivalent homogeneous boundary for the discrete slots
Don D Davis,Dewey Moore +1 more
TL;DR: In this paper, the authors derived the solid blockage interference for a doublet on the tunnel axis and the boundary interference for lifting wings in circular, rectangular, and two-dimensional slotted tunnels by substituting an equivalent homogeneous boundary for the physical boundary of discrete slots.
ReportDOI
Experimental and theoretical study of mean boundary conditions at perforated and longitudinally slotted wind tunnel walls
TL;DR: In this article, a mean boundary condition for the flow of an incompreesible inviscid fluid along a longitudinally slotted wall taking into consideration the finite thickness of the slats was derived.
ReportDOI
Boundary interference in a rectangular wind tunnel with perforated walls
C F Lo,R H Oliver +1 more
TL;DR: In this paper, the boundary interference at subsonic speeds for rectangular wind tunnels with perforated walls was analyzed using the point-matching method with an equivalent homogeneous boundary condition.
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