On upstream influence in supersonic flows [PDF]
, 2005 The general problem of propagation of three-dimensional disturbances in viscous supersonic flows is considered in the framework of characteristic analysis.
Krechetnikov, R., Lipatov, I. I.
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Diagnostic monitoring of drivetrain in a 5 MW spar-type floating wind turbine using Hilbert spectral analysis [PDF]
, 2017 The objective of this paper is to investigate the frequency-based fault detection of a 5MW spar-type floating wind turbine (WT) gearbox using measurements of the global responses.
Blanke, Mogens +4 more
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Effects of Boundary-Layer Ingestion on the Aero-Acoustics of Transonic Fan Rotors [PDF]
, 2018 The use of boundary-layer-ingesting, embedded propulsion systems can result in inlet flow distortions where the interaction of the boundary-layer vorticity and the inlet lip causes horseshoe vortex formation and the ingestion of streamwise vortices into ...
Defoe, Jeffrey James +1 more
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A review of the ONR/NAVAIR research option combustion instabilities in compact ramjets, 1983-1988 [PDF]
, 1989 This paper consists of two parts summarizing two portions of the ONR/NAVAIR Research Option. The option began in 1983 and continued for five years, involving 11 organizations.
Culick, F. E. C., Schadow, K. C.
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A Note on the Linear and Nonlinear Theories for Fully Cavitated Hydrofoils [PDF]
, 1956 The lifting problem of fully cavitated hydrofoils has recently received some attention. The nonlinear problem of two-dimensional fully cavitated hydrofoils has been treated by the author, using a generalized free streamline theory.
Wu, T. Yao-tsu
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Effects of thermal conduction in sonoluminescence [PDF]
, 1962 Current experimental results indicate that sonoluminescence is largely thermal in origin, with the spectra showing a direct relation between luminous intensity and the temper ature s generated inside the collapsing cavitation bubbles.
Hickling, Robert
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Buckling of a beam extruded into highly viscous fluid
, 2014 Inspired by microscopic paramecies which use trichocyst extrusion to propel themselves away from thermal aggressions, we propose a macroscopic experiment to study the stability of a slender beam extruded in a highly viscous fluid.
Gosselin, Frederick . P. +2 more
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Open Rotor Noise Prediction Methods at NASA Langley- A Technology Review [PDF]
, 2009 Open rotors are once again under consideration for propulsion of the future airliners because of their high efficiency. The noise generated by these propulsion systems must meet the stringent noise standards of today to reduce community impact.
Dunn, Mark H. +3 more
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The collapse of a spherical cavity in a compressible liquid [PDF]
, 1963 This paper presents numerical solutions for the flow in the vicinity of a collapsing spherical bubble in water. The bubble is assumed to contain a small amount of gas and the solutions are taken beyond the point where the bubble reaches its minimum ...
Hickling, Robert, Plesset, Milton S.
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Surface Integral Analogy Approaches to Computing Noise Generated by a 3D High-Lift Wing Configuration [PDF]
, 2012 Three surface integral approaches of the acoustic analogies are studied to predict the noise from a three-dimensional, high-lift wing configuration. The approaches refer to the Kirchhoff method, the Ffowcs Williams and Hawkings method of the permeable ...
Davidson, Lars +5 more
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