Mixing enhancement in a subsonic-supersonic shear layer with a cavity splitter plate

Ao, Wen; Chen, Zhenxia; Liu, Peijin; Shang, Shuai; Ma, Kai; Fu, Ben-shuai

doi:10.1016/j.ast.2020.105847

Cited by 15 publications

(1 citation statement)

References 28 publications

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“…Supersonic shear layer laden with dispersed fuel droplets is considered as the physical model for the supersonic c-based engine [1][2][3][4]. The research on supersonic two-phase flow includes the dispersion of sprayed droplet, the droplet evaporation, and the mixing between fuel vapors and air in the carrier phase, which are very important and complicated scientific issues for supersonic multiphase flow and combustion.…”

Section: Introductionmentioning

confidence: 99%

Effects of Flow Compressibility on Two-Phase Mixing in Supersonic Droplet-Laden Flows

Ren

Wang

Zhang

2020

International Journal of Aerospace Engineering

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This research addresses a numerical analysis on the effects of flow compressibility on the characteristics of droplet dispersion, evaporation, and mixing of fuel and air according to the simulation of the spatially developing supersonic shear flows laden with evaporating n-decane droplets. A sixth-order hybrid WENO numerical scheme is employed for capturing the unsteady wave structures. The influence of inflow convective Mach number ( M c ), representing the high-speed flow compressibility, on the two-phase mixing is analyzed, in which M c is specified from 0.4 to 1.0. It is found that the shearing vortex is compressed spatially as M c increases, associated with the alternate distributions of compression and expansion regimes in the flow field. The flow compressibility changes not only the vortex structures but also the aerothermal parameters of the shear flows, and further influences the dispersion and evaporation of droplets. The two-phase mixing efficiency is observed to decrease as M c increases.

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Section: Introductionmentioning

confidence: 99%