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pro vyhledávání: '"Bernhard H. Anderson"'
Autor:
Bernhard H. Anderson, Harold S. Haller
Publikováno v:
Quality Engineering. 23:46-58
This article offers an approach to reducing time and cost of experimentation in large wind tunnels by combining computer simulations of fluid dynamics test models with small sets of experimental data. To demonstrate the viability of this technique, t
Autor:
Bernhard H. Anderson
Publikováno v:
50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference.
This paper presents a statistical methodology whereby the probability limits associated with CFD grid resolution of inlet flow analysis can be determined which provide quantitative information on the distribution of that error over the specified oper
Autor:
Bernhard H. Anderson, Lois Weir
Publikováno v:
50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference.
Supersonic inlets with external compression, having a good level performance at the critical operating point, exhibit a marked instability of the flow in some subcritical operation below a critical value of the capture mass flow ratio. This takes the
Publikováno v:
50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference.
Development of commercial supersonic aircraft has been hindered by many related factors including fuel-efficiency, economics, and sonic-boom signatures that have prevented over-land flight. Materials, propulsion, and flight control technologies have
Autor:
Bernhard H. Anderson, James Gibb
Publikováno v:
Journal of Aircraft. 35:513-520
The theoretical and experimental work carried out under the NASA/MOD joint aeronautical program has shown that computational fluid dynamics (CFD) vortex-generator installation designs successfully managed inlet-duct now distortion and that significan
Publikováno v:
50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition.
Hybrid flow control, a combination of micro-ramps and micro-jets, was experimentally investigated in the 15x15 cm Supersonic Wind Tunnel (SWT) at the NASA Glenn Research Center. Full factorial, a design of experiments (DOE) method, was used to develo
Publikováno v:
Journal of Propulsion and Power. 10:661-667
A three-dimensional implicit full Navier-Stokes (FNS) analysis and a three-dimensional reduced Navier-Stokes (RNS) initial value space marching solution technique have been applied to a class of separated flow problems within a diffusing S-duct confi
Publikováno v:
41st AIAA Fluid Dynamics Conference and Exhibit.
A passive method of controlling normal shock/boundary layer interactions (SBLIs) for external compression inlet applications is the use of micro-ramps for boundary layer control (BLC). These devices were placed upstream of normal SBLIs of various sho
Autor:
Bernhard H. Anderson, James Gibb
Publikováno v:
Journal of Propulsion and Power. 9:422-430
The present study demonstrates that the reduced Navier-Stokes RNS3D code can be used very effectively to develop a vortex generator installation to minimize the engine face circumferential distortion by controlling secondary flow. The computing times
Publikováno v:
Journal of Propulsion and Power. 8:1266-1272
The present study demonstrates that the reduced Navier-Stokes code (RNS3D) can be used very effectively to develop a vortex generator installation for the purpose of minimizing the engine-face circumferential distortion by controlling the development