Numerical simulations of gas-particle flow behavior created by low-level rotary-winged aircraft flight over particle bed

doi:10.1007/s10483-019-2449-9

Applied Mathematics and Mechanics (English Edition) ›› 2019, Vol. 40 ›› Issue (3): 397-406.doi: https://doi.org/10.1007/s10483-019-2449-9

Numerical simulations of gas-particle flow behavior created by low-level rotary-winged aircraft flight over particle bed

Xiaoxue JIANG¹, Yingqiao XU², Chuang WANG², Linzhi MENG², Huilin LU¹

1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
2. Fifth Research Institute, China Aerospace Science and Technology Corporation, Beijing 100081, China

收稿日期:2018-10-16 修回日期:2018-12-06 出版日期:2019-03-01 发布日期:2019-03-01
通讯作者: Huilin LU E-mail:huilin@hit.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Nos. 91752115 and 51776059)

Numerical simulations of gas-particle flow behavior created by low-level rotary-winged aircraft flight over particle bed

Xiaoxue JIANG¹, Yingqiao XU², Chuang WANG², Linzhi MENG², Huilin LU¹

1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
2. Fifth Research Institute, China Aerospace Science and Technology Corporation, Beijing 100081, China

Received:2018-10-16 Revised:2018-12-06 Online:2019-03-01 Published:2019-03-01
Contact: Huilin LU E-mail:huilin@hit.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 91752115 and 51776059)

摘要/Abstract

摘要： The aerodynamics of gas-particle suspensions is simulated as an Euler-Euler two-fluid model in a revolving rotor over a particle bed. The interactions of collisions between the blade and particles and particle-particle interactions are modeled using the kinetic theory of granular flow (KTGF). The gas turbulence induced by the rotation of the rotor is modeled using the k_g-ε_g model. The flow field of a revolving rotor is simulated using the multiple reference frame (MRF) method. The distributions of velocities, volume fractions, and gas pressure are predicted while the aircraft hovers at different altitudes. The gas pressure decreases from the hub to the tip of the blade, and it is higher at the pressure side than that at the suction side of the rotor. The turbulent kinetic energy of the gas increases toward the blade tip. The volume fraction of particles decreases as the hovering altitude increases. The simulated pressure coefficient is compared with that in experimental measurements.

关键词: Stokes wave, limiting wave, optimization, helicopter, kinetic theory of granular flow (KTGF), rotor, Euler-Euler two-fluid model, pressure coefficient

Abstract: The aerodynamics of gas-particle suspensions is simulated as an Euler-Euler two-fluid model in a revolving rotor over a particle bed. The interactions of collisions between the blade and particles and particle-particle interactions are modeled using the kinetic theory of granular flow (KTGF). The gas turbulence induced by the rotation of the rotor is modeled using the k_g-ε_g model. The flow field of a revolving rotor is simulated using the multiple reference frame (MRF) method. The distributions of velocities, volume fractions, and gas pressure are predicted while the aircraft hovers at different altitudes. The gas pressure decreases from the hub to the tip of the blade, and it is higher at the pressure side than that at the suction side of the rotor. The turbulent kinetic energy of the gas increases toward the blade tip. The volume fraction of particles decreases as the hovering altitude increases. The simulated pressure coefficient is compared with that in experimental measurements.

Key words: Stokes wave, limiting wave, optimization, helicopter, Euler-Euler two-fluid model, rotor, pressure coefficient, kinetic theory of granular flow (KTGF)

中图分类号:

76F60

Xiaoxue JIANG, Yingqiao XU, Chuang WANG, Linzhi MENG, Huilin LU. Numerical simulations of gas-particle flow behavior created by low-level rotary-winged aircraft flight over particle bed[J]. Applied Mathematics and Mechanics (English Edition), 2019, 40(3): 397-406.

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Numerical simulations of gas-particle flow behavior created by low-level rotary-winged aircraft flight over particle bed

Numerical simulations of gas-particle flow behavior created by low-level rotary-winged aircraft flight over particle bed

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