Results 61 to 70 of about 4,183,596 (242)

Numerical Study of Staged Transverse Injection of Sonic Jets into Supersonic Crossflows behind a Step [PDF]

مجله مدل سازی در مهندسی, 2019
Efficient combustion in the Scramjet combustors depends on the proper air-fuel mixing. Sufficient mixing between the supersonic airstream and the fuel jet is critical for designing of scramjet engines, and this is due to the very short residence ...
Mostafa Zahedzadeh, Fathollah Ommi
doaj   +1 more source

On the leading-edge suction and stagnation-point location in unsteady flows past thin aerofoils

Journal of Fluid Mechanics, 2020
Unsteady thin-aerofoil theory is a low-order method for calculating the forces and moment developed on a camber line undergoing arbitrary motion, based on potential-flow theory.
K. Ramesh
semanticscholar   +1 more source

Global spatially explicit yield gap time trends reveal regions at risk of future crop yield stagnation

Nature Food
Yield gaps, here defined as the difference between actual and attainable yields, provide a framework for assessing opportunities to increase agricultural productivity.
J. Gerber, Deepak K. Ray, D. Makowski, E. Butler, Nathaniel D. Mueller, P. West, Justin A Johnson, Stephen Polasky, Leah H Samberg, S. Siebert, Lindsey Sloat   +10 more
semanticscholar   +1 more source

Flow Field in the Turbine Rotor Passage in an Automotive Torque Converter Based on the High Frequency Response Rotating Five-hole Probe Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6)

International Journal of Rotating Machinery, 2001
The relative flow field in an automotive torque converter turbine was measured at three locations inside the passage (turbine 1/4 chord, mid-chord, and 4/4 chord) using a highfrequency response rotating five-hole-probe.
Y. F. Liu, B. Lakshminarayana, J. Burningham   +2 more
doaj   +1 more source

Mounting pressure on Russia's government budget

, 2019
SWP Research ...
Kluge, Janis, Stiftung Wissenschaft Und Politik   +1 more
openaire   +3 more sources

Aerothermodynamic Analysis of a Reentry Brazilian Satellite

, 2012
This work deals with a computational investigation on the small ballistic reentry Brazilian vehicle SARA (acronyms for SAt\'elite de Reentrada Atmosf\'erica). Hypersonic flows over the vehicle SARA at zero-degree angle of attack in a chemical equilibrium
AL Garcia, BJ Griffith, C Borgnakke, C Cercignani, C Weiland, DI Pullin, DV Kozak, F Sharipov, FJ Alexander, FJ Alexander, G Tchuen, GA Bird, GA Bird, GA Bird, HA Carlson, JMA Longo, MR Gilmore, MS Ivanov, NG Hadjiconstantinou, P Gnoffo, R Savino, RF Probstein, V Cuda Jr., WA Wood, Wilson F. N. Santos   +24 more
core   +1 more source

Pressure distribution in a converging-diverging nozzle during two-phase choked flow of subcooled nitrogen [PDF]

Choked flow rates and axial pressure distributions were measured for subcooled nitrogen in a converging-diverging nozzle with a constant area section in the throat region.
Simoneau, R. J.
core   +1 more source

Simulation of flight test conditions in the Langley pilot transonic cryogenic tunnel [PDF]

The theory and advantages of the cryogenic tunnel concept are briefly reviewed. The unique ability to vary temperature independently of pressure and Mach number allows, in addition to large reductions in model loads and tunnel power, the independent ...
Adcock, J. B., Kilgore, R. A., Ray, E. J.   +2 more
core   +1 more source

Ultra-relativistic, neutrino driven flows in GRBs: A double transonic flow solution in Schwarzschild spacetime

, 2013
The structure of a hydrodynamic, double transonic flow driven by neutrino annihilation in the polar region of a Schwarzschild black hole is computed for different energy deposition profiles.
Globus, Noemie, Levinson, Amir
core   +1 more source

Generation of energetic He atom beams by a pulsed positive corona discharge [PDF]

, 1997
Time-of-flight measurements were made of neutral helium atom beams extracted from a repetitive, pulsed, positive-point corona discharge. Two strong neutral peaks, one fast and one slow, were observed, accompanied by a prompt photon peak and a fast ion ...
Blumberg, Seth, Dibble, Theodore S., Lo, Shui-Yin, Lobo, Julio D., Okumura, Mitchio, Tsao, Chun-Cheng, Zhang, Xu   +6 more
core   +1 more source