Spelling suggestions: "subject:"aerodynamics"" "subject:"neurodynamics""
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The unsteady aerodynamics of an annular cascadeDavies, M. R. D. January 1984 (has links)
No description available.
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Unsteady boundary-layers on axial-flow turbine rotor bladesHodson, H. P. January 1983 (has links)
No description available.
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Studies of aerodynamic dragWilby, W. A. January 1982 (has links)
No description available.
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A new, pressure-based, unstructured mesh, Navier-Stokes solver and application to 3D compressible vortex/boundary layer interactionsWatterson, John Kenneth January 1994 (has links)
No description available.
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Relaminarisation of turbulent boundary layersBrandt, Rune January 1993 (has links)
No description available.
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Induced drag and wake structures behind wingsLam, Fung January 1991 (has links)
No description available.
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A study of roughness in turbulent hypersonic boundary-layersBabinsky, Holger January 1993 (has links)
The influence of large scale regular roughness on a Mach 5 turbulent boundary layer and a compression corner was investigated on axisymmetric wind tunnel models. Three types of roughness were examined; a series of square cavities at two different sizes and a 45 degree sawtooth. Typical sizes ranged from 50% to 100% of an undisturbed boundary layer thickness. The roughness was limited to a short region followed by a smooth surface. Compression corners were formed by 15° and 20° flares located downstream of the roughness. The flow in the wind tunnel was investigated in detail to obtain knowledge on operating conditions and flow quality. Liquid crystal thermography was developed for routine use in hypersonic blow-down wind tunnels with superior spatial resolution and experimental uncertainties in the range of traditional techniques. The effect on flow parameters downstream of the last roughness element were 7, found to differ significantly for the different quantities. Velocity profiles were found i, to be less full and skin friction was found to be reduced for all streamwise "~ distances. Surface heat transfer was increased in a short region limited to 1.5 boundary layer thicknesses behind the roughness whereas surface pressure was not affected. Sawtooth shaped roughness was found to cause a stronger j disturbance than square cavities of twice the size. Little influence of the roughness was noted on the flow over the compression corner. The flow over the 20° compression corner showed an increase in upstream influence for the sawtooth shaped roughness as well as the larger cavities. Surface pressure measurements did not indicate a separation in any case. Heat transfer measurements revealed a peak located approximately 0.25 boundary layer thicknesses behind the corner. No such feature was found in the surface pressure distributions. It is suggested that a small scale separation is located very close to the corner causing the peak in heat transfer at reattachment without any effect on surface pressures. The existence of such a separation has been confirmed by surface flow visualisations for both flares.
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The introduction of laminar flow to the design and optimisation of transport aircraftWilson, R. A. L. January 1997 (has links)
A methodology has been developed to model the direct consequences of laminar flow technology on wing, empennage and nacelle surfaces. In particular two concepts were considered, namely Natural Laminar Flow (NLF) and Hybrid Laminar Flow Control (HLFC). The methodology was introduced into an existing numerical design synthesis for commercial transport aircraft, which was linked to a non-linear constrained optimisation code. This permitted the impact of laminar flow technology on the optimum aircraft configuration and Direct Operating Costs (DOC) to be assessed.
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Investigation of flow in the nozzle-less volute casing of a centripetal gas turbineHussain, M. January 1982 (has links)
No description available.
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An improved boundary condition for perforated wall windtunnel flowsHenington, P. January 1982 (has links)
No description available.
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