Unit Reynolds number, Mach number and pressure gradient effects on laminar–turbulent transition in two-dimensional boundary layers
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DOI: 10.1007/s00348-018-2538-8
Abstract: The influence of unit Reynolds number ($$Re_1=17.5\times 10^{6}$$Re1=17.5×106–$$80\times 10^{6}\,\text {m}^{-1}$$80×106m-1), Mach number ($$M= 0.35$$M=0.35–0.77) and incompressible shape factor ($$H_{12} = 2.50$$H12=2.50–2.66) on laminar–turbulent boundary layer transition was systematically investigated in the Cryogenic Ludwieg-Tube Göttingen (DNW-KRG).… read more here.
Keywords: transition; reynolds number; unit reynolds; number ... See more keywords
Mach Number Determination in a High-Enthalpy Supersonic Arc-Heated Plasma Wind Tunnel
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Aeronautical and Space Sciences"
DOI: 10.1007/s42405-018-0128-x
Abstract: In this experimental study, an intrinsic flow diagnostic technique involving a wedge probe is studied in a 0.4 MW class arc-jet plasma wind tunnel. The main objectives of this study are to determine the Mach number… read more here.
Keywords: mach number; wind tunnel; plasma wind; enthalpy ... See more keywords
Experimental and numerical study on the local unstart mechanism of hypersonic inlet
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DOI: 10.1016/j.actaastro.2019.04.041
Abstract: Abstract Hypersonic inlet is a vital component of a scramjet, whose starting mode is the prerequisite of the normal operation. Relative researches and empirical formulae for hypersonic inlet, which have been conducted, are appropriate for… read more here.
Keywords: mach number; inlet; experimental numerical; hypersonic inlet ... See more keywords
Novel osculating flowfield methodology for wide-speed range waverider vehicles across variable Mach number
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DOI: 10.1016/j.actaastro.2019.05.056
Abstract: Abstract In order to guarantee the good aerodynamic performance of the waverider vehicle in the wide-speed range, the variable Mach number osculating flowfield waverider design theory based on conical basic flowfield is put forward. The… read more here.
Keywords: methodology; mach number; osculating flowfield; waverider ... See more keywords
Influence of Mach number and angle of attack on the two-dimensional transonic buffet phenomenon
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DOI: 10.1016/j.ast.2018.03.045
Abstract: Abstract Within a narrow band of flight conditions in the transonic regime, self-sustained shock oscillations that involve the interaction between shock-waves and intermittently separated shear layers may develop. This phenomenon, known as transonic shock buffet,… read more here.
Keywords: buffet; angle attack; influence mach; mach number ... See more keywords
Effect of Mach number on the mode transition for supersonic cavity flows
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DOI: 10.1016/j.ast.2020.106101
Abstract: Abstract Direct numerical simulations of supersonic flows past a two-dimensional cavity with a length-to-depth ratio of 4 under different Mach numbers are performed. Firstly, as the Mach number increased from 1.1 to 2.7 with a… read more here.
Keywords: cavity; layer; mode; mach number ... See more keywords
Optimization of scramjet inlet based on temperature and Mach number of supersonic combustion
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DOI: 10.1016/j.ast.2021.106864
Abstract: Abstract A two-dimensional mixed compression scramjet inlet design is presented in this work. The design is based on the static temperature and Mach number at the combustion chamber inlet according to the conditions required to… read more here.
Keywords: number; compression; mach number; inlet ... See more keywords
Mach number and energy loss analysis inside multi-stage Tesla valves for hydrogen decompression
Sign Up to like & getrecommendations! Published in 2019 at "Energy"
DOI: 10.1016/j.energy.2019.05.064
Abstract: Abstract Multi-stage Tesla valves in the reversed flow state can be applied during the hydrogen decompression process between the high pressure hydrogen storage vessel and the fuel cell. Under high-pressure turbulent hydrogen flow, severe aerodynamic… read more here.
Keywords: number; tesla valves; loss; mach number ... See more keywords
Ignition and combustion characteristics of supersonic combustor under flight Mach number 2.6–3.8
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DOI: 10.1016/j.fuel.2020.118960
Abstract: Abstract This paper simulated the flying conditions of flight Mach number 2.6 ~ 3.8. Under the inflow state of the total temperature of 507 K ~ 820 K, the ignition test under low total temperature was carried out on the supersonic… read more here.
Keywords: total temperature; combustion; combustor; flight ... See more keywords
One-dimensional turbulence investigation of variable density effects due to heat transfer in a low Mach number internal air flow
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DOI: 10.1016/j.ijheatfluidflow.2019.108481
Abstract: Abstract A novel spatial formulation of the One-Dimensional Turbulence (ODT) model is applied to a vertical pipe-flow with heat transfer, analogous to the Direct Numerical Simulation (DNS) performed by Bae et al. [Phys. Fluids 18, (075102)… read more here.
Keywords: variable density; low mach; formulation; number ... See more keywords
Numerical characterization of 3D nonreacting supersonic cavity combustor with inlet Mach number variation
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2020.01.187
Abstract: Abstract A numerical investigation of a cavity-based supersonic combustor with non-reacting upstream hydrogen fuel injection is conducted to study the effects of inlet Mach number (Ma) on flow structure and fuel-air mixing. Three different freestream… read more here.
Keywords: mach; cavity; combustor; mach number ... See more keywords