Numerical Analysis of Supersonic Impinging Jet Flows of Particle-Gas Two Phases
| Autor: | Guang Fei Ma, Guang Zhang, Heuy Dong Kim, Zhe Lin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Bioengineering stokes number 02 engineering and technology lcsh:Chemical technology 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics lcsh:Chemistry impinging force 0203 mechanical engineering supersonic impinging jet 0103 physical sciences Shear stress Chemical Engineering (miscellaneous) Supersonic speed lcsh:TP1-1185 Takeoff Particle velocity Stokes number Astrophysics::Galaxy Astrophysics Jet (fluid) Turbulence Process Chemistry and Technology Mechanics wall shear stress 020303 mechanical engineering & transports lcsh:QD1-999 particle-gas flows Particle |
| Zdroj: | Processes, Vol 8, Iss 2, p 191 (2020) Processes Volume 8 Issue 2 |
| ISSN: | 2227-9717 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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