Large eddy simulation of particle wake effect and RANS simulation of turbulence modulation in gas-particle flows

• TRANSPORT PHENOMENA & FLUID MECHANICS • Previous Articles Next Articles

Large eddy simulation of particle wake effect and RANS simulation of turbulence modulation in gas-particle flows

ZENG Zhuoxiong^a,b; ZHOU Lixing^a; QI Haiying^c

^a Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
^b Department of Mechanical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, China ^c Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

Received:1900-01-01 Revised:1900-01-01 Online:2007-02-28 Published:2007-02-28
Contact: ZENG Zhuoxiong

颗粒尾涡增强湍流的大涡模拟以及气固两相流中湍流变动的数值模拟

曾卓雄^a,b; 周力行^a; 祁海鹰^c

^aDepartment of Engineering Mechanics, Tsinghua University, Beijing 100084, China
^b Department of Mechanical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, China ^c Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

通讯作者: 曾卓雄

Abstract

Abstract: The turbulence enhancement by particle wake effect is studied by large eddy simulation (LES) of turbulent gas flows passing a single particle. The predicted time-averaged and root-mean-square fluctuation velocities behind the particle are in agreement with the Reynolds-averaged Navier-Stokes modeling results and experimental results. A semi-empirical turbulence enhancement model is proposed by the present authors based on the LES results. This model is incorporated into the second-order moment two-phase turbulence model for simulating vertical gas-particle pipe flows and horizontal gas-particle channel flows. The simulation results show that compared with the model not accounting for the particle wake effect, the present model gives simulation results for the gas turbu-lence modulation in much better agreement with the experimental results

Key words: large eddy simulation, gas-particle flow, turbulence modulation

摘要： The turbulence enhancement by particle wake effect is studied by large eddy simulation (LES) of turbulent gas flows passing a single particle. The predicted time-averaged and root-mean-square fluctuation velocities behind the particle are in agreement with the Reynolds-averaged Navier-Stokes modeling results and experimental results. A semi-empirical turbulence enhancement model is proposed by the present authors based on the LES results. This model is incorporated into the second-order moment two-phase turbulence model for simulating vertical gas-particle pipe flows and horizontal gas-particle channel flows. The simulation results show that compared with the model not accounting for the particle wake effect, the present model gives simulation results for the gas turbu-lence modulation in much better agreement with the experimental results

关键词: large eddy simulation;gas-particle flow;turbulence modulation

ZENGZhuoxiong,ZHOULixing, QIHaiying. Large eddy simulation of particle wake effect and RANS simulation of turbulence modulation in gas-particle flows[J]. .

曾卓雄, 周力行, 祁海鹰. 颗粒尾涡增强湍流的大涡模拟以及气固两相流中湍流变动的数值模拟[J]. CIESC Journal.

References

1    Yuan, Z., Michaelides, E.E., “Turbulence modulation in particle flows—a theoretical approach”, Int. J. Multi-phase Flow, 18, 779—785(1992).
2    Yarin, L.P., Hetsroni, G., “Turbulence intensity in dilute two-phase flows: the particles-turbulence interaction in dilute two-phase flow”, Int. J. Multiphase Flow, 20, 27—44(1994).
3    Kenning, V.M., Crowe, C.T., “On the effect of particles on carrier phase turbulence in gas-particle flows”, Int. J. Multiphase Flow, 23, 403—408(1997).
4    Yu, Y., Zhou, L.X., “Modeling of turbulence modifica-tion using two-time-scale dissipation models and ac-counting for the particle wake effect”, In: ASME-FED Summer Meeting, Paper FEDSM 2003-45749, Honolulu, Hawaii (2003).
5    Johnson, T.A., Patel, V.C., “Flow past a sphere up to a Reynolds number of 300”, J. Fluid Mech., 378, 19—70(1999).
6    Constantinescu, G.S., Squires, K.D., “LES and DES in-vestigations of turbulent flow over a sphere at Re=10000”, Flow Turb. Combust., 70, 267—298(2003).
7    Lilly, D.K., “A proposed modification of the Germano subgrid-scale closure method”, Phys. Fluids A, 4, 633—635(1992).
8    Issa, R.I., “Solution of the implicitly discretized fluid flow equations by operator splitting”, J. Comput. Phys., 62, 40—65(1986).
9    Wu, J.S., Faeth, G.M., “Sphere wakes at moderate Rey-nolds numbers in a turbulent environment”, AIAA J., 32, 535—541(1994).
10    Zhou, L.X., Dynamics of Multiphase Turbulent Reacting Fluid Flows, National Defense Industry Press, Beijing (2002). (in Chinese)
11    Zhou, L.X., Chen, T., “Simulation of swirling gas-particle flows using K--Kp and USM two-phase tur-bulence models”, Powder Technol., 114, 1—11(2001).
12    Lain, S., Sommerfeld, M., “Turbulence modulation in dispersed two-phase flow laden with solids from a La-grangian perspective”, Int. J. Heat Fluid Flow, 24, 616—625(2003).
13    Zhang, X., Zhou, L.X., “A second-order moment parti-cle-wall collision model accounting for the wall rough-ness”, Powder Technol., 159, 111—120(2005) .
14    Zhou, L.X., Zhang, X., “Simulation of sudden-expansion and swirling gas-particle flows using a two-fluid parti-cle-wall collision model with consideration of the wall roughness”, Acta Mechanica Sinica, 20, 447—454(2004).
15    Tsuji, Y., Morikawa, Y., Shinomi, H., “LDV measure-ments of air-solid two-phase flow in a vertical pipe”, J. Fluid Mech., 139, 417—434(1984).
16    Kussin, J., Sommerfeld, M., “Experimental studies on particle behavior and turbulence modification in hori-zontal channel flow with different wall roughness”, Exp. Fluids, 33, 143—159(2002).

[1]	Weibin SHI, Shanshan LONG, Xiaogang YANG, Xinyue CAI. Bubble breakage, turbulence dispersion and mass transfer model considering the joint effects of bubble-induced turbulence and shear turbulence [J]. CIESC Journal, 2022, 73(6): 2573-2588.
[2]	Jing ZHANG, Yuanyuan ZHOU, Bin GONG, Yaxia LI, Hailiang LIU, Jianhua WU. Flow characteristics of three-dimensional concave-wall jet [J]. CIESC Journal, 2019, 70(4): 1340-1348.
[3]	OU Yihong, LI Run, YUAN Guangqiang, LI Guoqing, WANG Shimao. Experimental and numerical simulation of gasoline-air mixture explosion characteristics in semi-confined space [J]. CIESC Journal, 2017, 68(11): 4437-4444.
[4]	WANG Caijun, LU Shaojie, WANG Ping. Sub-grid scale combustion model based on REDIM method and its application [J]. CIESC Journal, 2015, 66(12): 4948-4959.
[5]	ZHOU Lixing, HU Liyuan. Advances in LES of two-phase combustion (II) LES of complex gas-particle flows and coal combustion [J]. Chin.J.Chem.Eng., 2012, 20(4): 609-616.
[6]	LI Jing, JIANG Guifeng, WANG Hanfeng, YI Chao, LIU Zhaohui, ZHENG Chuguang. Modifications of coherent structures in turbulent boundary layer of dilute gas-particle horizontal channel flow [J]. CIESC Journal, 2012, 63(11): 3407-3417.
[7]	WANG Jiansheng, LI Kangning, GAO Xiaoming. Heat transfer and flow characteristics on solid and flexible wavy surfaces [J]. CIESC Journal, 2012, 63(11): 3418-3427.
[8]	YU Mingzhou, LIN Jianzhong, XIONG Hongbing. Quadrature method of moments for nanoparticle coagulation and diffusion in the planar impinging jet flow [J]. , 2007, 15(6): 828-836.
[9]	FANJianhua,WANGYundong,FEIWeiyang. Large eddy simulations of flow instabilities in a stirred tank generated by a Rushton turbine [J]. , 2007, 15(2): 200-208.
[10]	ZHANGYanhong, YANGChao, MAOZaisha. Large Eddy Simulation of Liquid Flow in a Stirred Tank with Im-proved Inner-Outer Iterative Algorithm [J]. , 2006, 14(3): 321-329.
[11]	LIU Chunrong, GUO Yincheng. Mechanisms for particle clustering in upward gas-solid flows [J]. , 2006, 14(2): 141-148.
[12]	MIN Jian and GAO Zhengming. Large Eddy Simulations of Mixing Time in a Stirred Tank [J]. , 2006, 14(1): 1-7.