Effect of elevated pressure on gas-solid flow properties in a powder feeding system

• Autorzy: Ren Guanlong , Sun Haijun , Xu Yihua , Li Chao

Identyfikatory

DOI

10.2478/pjct-2022-0021

• Języki publikacji: EN

Abstrakty

EN

In view of the powder feeding system, a multi-physical coupling model of the gas-powder-piston was established based on the Euler-Euler two-fluid model. The numerical simulation method was applied to explore the effects of dense gas-solid flow characteristics under different operating pressures. The results show that gas-solid pulsations at different operating pressures are mainly concentrated in the upper part of the powder tank. An elevated operating pressure efficiently decreases the powder layer area (ε_p = 0.1) fluctuation. As the operating pressure increases from 0.5 MPa to 3.0 MPa, the rising time and fluctuation rate of pressure are reduced by 71.4% and 62.3%, respectively, and the pressure in the tank has a long stabilization period. Meanwhile, the variation of the instantaneous powder flow rate is more stable and its average value is closer to the theoretical. A high-pressure environment is more conducive to the stable transportation of powder.

Słowa kluczowe

EN

Powder engine; Pressure effect; Dense gas-solid two-phase flow; Euler-Euler two-fluid model; Numerical simulation

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2022
• Tom: Vol. 24, nr 3
• Strony: 41--52
• Opis fizyczny: Bibliogr. 36 poz., rys., tab., wz.

Twórcy

autor

Ren Guanlong

• School of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, China
• Jiangxi Key Laboratory of Micro Aero-engine, Nanchang 330063, China

autor

Sun Haijun

• School of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, China
• Jiangxi Key Laboratory of Micro Aero-engine, Nanchang 330063, China

autor

Xu Yihua

• School of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, China
• Jiangxi Key Laboratory of Micro Aero-engine, Nanchang 330063, China

autor

Li Chao

• Unmanned System Research Institute, Northwestern Polytechnical University, Xi’an 710072, China

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).