Numerical Simulation of Gas-Particle Turbulent Flow Using k_g-ε_g -k_p-εp-k_pg-θ Turbulence Model

Abstract:

kg-εg-kp-εp-kpg-θ turbulence model is proposed which considers particle-particle collision and gas-particle turbulence. This model includes turbulent kinetic energy equation, turbulent kinetic energy dissipation rate equation, particle pseudo-temperature transportation equation and the two-phase velocity correlation transport equation. To close the turbulence model, algebraic expressions of two-phase Reynolds stresses and two-phase velocity correlation variable are established which considered both gas-particle interaction and anisotropy. This model is used to simulate gas-particle in swirling sudden-expansion chamber. Comparing with kg-εg-kp-εp-θ model which is simply closed using a semi-empirical dimensional analysis, the present model has better predicted capability. It is shown that the present model gives simulation results in much better agreement with the experimental results than the kg-εg-kp-εp-θ model.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 4327-4331
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.4327
• Online since: October 2012
• Authors: Zhuo Xiong Zeng*, Feng Xue, Yi Hua Xu
• Keywords: Gas-Particle Flow, Numerical Simulation, Turbulence Model

References

[1] Njobuenwu D O, Fairweather M, Yao J. AIChE Journal, Vol.58(2012), p.14.

[2] Kartushinsky A I, Michaelides E E, Rudi Y A, et al. AIChE Journal, Vol.57(2011), p.2977.

[3] Zhou L X, Huang X Q. Science in China, English Edi., Vol.33(1990), p.53.

[4] Cheng Y, Guo Y C, Wei F, et al. Chemical Engineering Science, Vol.54(1999), p.2019.

[5] Wei Jinjia, Hu Chunbo. Applied Mathematics and Mechanics, Vol.21(2000), p.519.

[6] Yu Y, Zhou L X. Acta Mechanica Sinica, Vol.21(2005), p.228.

[7] Zeng Z X, Zhou L X. Powder Technology, Vol.162(2006), p.27.

[8] Gidaspow D. New York: Academic Press, 1994.

[9] Sommerfeld M, Qiu H H. International Journal of Heat and Fluid Flow, Vol.12(1991), p.15.