Numerical prediction effects of particle-particle collisions on gas-particle flows in swirl chamber

被引：20

作者：

Liu, Yang ^{[1
]}

Liu, Xue ^{[2
]}

Li, Guohui ^{[3
]}

Jiang, Lixiang ^{[4
]}

机构：

[1] Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Peoples R China

[2] Harbin Power Syst Engn & Res Inst, Performance Test Ctr, Harbin 150046, Peoples R China

[3] Dalian Jiaotong Univ, Sch Elect & Informat Engn, Dalian 116028, Peoples R China

[4] Beijing Inst Spacecraft Engn Environm, Beijing 10094, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2011年 / 52卷 / 03期

关键词：

Unified second-order-moment two-phase stress model; Particle-particle collision; Swirling gas-particle turbulence flows; Numerical simulation; 2-PHASE TURBULENCE MODEL; GRANULAR FLOW; COUETTE-FLOW; SOLID FLOWS; SIMULATION; FLUIDIZATION;

D O I：

10.1016/j.enconman.2010.10.040

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, a unified-second-order-moment two-phase turbulent model incorporating into the kinetic theory of granular flows for considering particle-particle collision (USM-theta) is proposed to study the turbulent gas-particle flows in swirl chamber. Anisotropy of gas-solid two-phase stress and the interaction between two-phase stresses are fully considered by constructing a two-phase Reynolds stress model and a transport equation of two-phase stress correlation. Sommerfeld et al.(1991) experimental data is used to quantitatively validate USM-theta and USM model for analysis the effects of particle-particle collision. Numerical predicted results show that time-averaged velocity and fluctuation velocity of gas and particle using particle temperature model are better than those of without particle temperature model. Maximum particle concentration and temperature located at thin shear layer adjacent to wall surface due to particle inertia. Small-scale particle fluctuation due to particle-particle collision is smaller than large-scale gas-particle turbulence fluctuation. Particle-particle collision leads to the redistribution dissipation of Reynolds stress and particle turbulence kinetic energy. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1748 / 1754

页数：7

共 27 条

[1] EXPERIMENTS ON A GRAVITY-FREE DISPERSION OF LARGE SOLID SPHERES IN A NEWTONIAN FLUID UNDER SHEAR [J].

BAGNOLD, RA .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1954, 225 (1160) :49-63

[2] DILUTE TURBULENT GAS-SOLID FLOW IN RISERS WITH PARTICLE-PARTICLE INTERACTIONS [J].

BOLIO, EJ ;

YASUNA, JA ;

SINCLAIR, JL .

AICHE JOURNAL, 1995, 41 (06) :1375-1388

[3] Gas/particle flow characteristics of two swirl burners [J].

Chen, Zhichao ;

Li, Zhengqi ;

Jing, Jianping ;

Chen, Lizhe ;

Wu, Shaohua ;

Yao, Yang .

ENERGY CONVERSION AND MANAGEMENT, 2009, 50 (05) :1180-1191

[4]

Crowe C. T., 1998, MULTIPHASE FLOWS DRO, P234

[5] A BUBBLING FLUIDIZATION MODEL USING KINETIC-THEORY OF GRANULAR FLOW [J].

DING, J ;

GIDASPOW, D .

AICHE JOURNAL, 1990, 36 (04) :523-538

[6] ON PREDICTING PARTICLE-LADEN TURBULENT FLOWS [J].

ELGHOBASHI, S .

APPLIED SCIENTIFIC RESEARCH, 1994, 52 (04) :309-329

[7]

Farzad B.T., 2010, ENERGY COVERS MANAGE, V51, P225

[8]

Gidaspow D., 1994, Multiphase Flow and Fluidization: Continuum and Kinetic Theory Description, P65

[9] Simulation of particle-fluid turbulence interaction in sudden-expansion flows [J].

Liao, CM ;

Lin, WY ;

Zhou, LX .

POWDER TECHNOLOGY, 1997, 90 (01) :29-38

[10] Hydrodynamic behavior of dense gas-particle flows under the reduced gravity conditions [J].

Liu, Yang ;

Li, Guo-hui ;

Jiang, Li-xiang .

ACTA ASTRONAUTICA, 2010, 67 (3-4) :417-423

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