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Open AccessArticle

Numerical Analysis of Supersonic Impinging Jet Flows of Particle-Gas Two Phases

1
State-Province Joint Engineering Lab of Fluid Transmission System Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
2
Standard & Quality Control Research Institute Ministry of Water, Hangzhou 310024, China
3
Department of Mechanical Engineering, Andong National University, Andong-Si 1375, Korea
*
Author to whom correspondence should be addressed.
Processes 2020, 8(2), 191; https://doi.org/10.3390/pr8020191
Received: 20 December 2019 / Revised: 13 January 2020 / Accepted: 27 January 2020 / Published: 5 February 2020
(This article belongs to the Special Issue Modeling, Simulation and Computation on Dynamics of Complex Fluids)
Supersonic impinging jet flows always occur when aircrafts start short takeoff and vertical landing from the ground. Supersonic flows with residues produced by chemical reaction of fuel mixture have the potential of reducing aircraft performance and landing ground. The adverse flow conditions such as impinging force, high noise spectrum, and high shear stress always take place. Due to rare data on particle-gas impinging jet flows to date, three-dimensional numerical simulations were carried out to investigate supersonic impinging jet flows of particle-gas two phases in the present studies. A convergent sonic nozzle and a convergent-divergent supersonic nozzle were used to induce supersonic impinging jet flows. Discrete phase model (DPM), where interaction with continuous phase and two-way turbulence coupling model were considered, was used to simulate particle-gas flows. Effects of different particle diameter and Stokes number were investigated. Particle mass loading of 10% were considered for all simulations. Gas and particle velocity contours, wall shear stress, and impinging force on the ground surface were obtained to describe different phenomena inside impinging and wall jet flows of single gas phase and gas-particle two phases.
Keywords: supersonic impinging jet; particle-gas flows; stokes number; wall shear stress; impinging force supersonic impinging jet; particle-gas flows; stokes number; wall shear stress; impinging force
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MDPI and ACS Style

Zhang, G.; Ma, G.F.; Kim, H.D.; Lin, Z. Numerical Analysis of Supersonic Impinging Jet Flows of Particle-Gas Two Phases. Processes 2020, 8, 191.

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