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Numerical computation of turbulent gas-particle flow in a backward-facing step. Model comparison with experimental data

Aldo Benavides (Institutionen för tillämpad mekanik, Strömningslära) ; Berend van Wachem (Institutionen för tillämpad mekanik) ; Tobias Strömgren ; Geert Brethouwer ; Gustav Amberg ; Arne Johansson
Proceedings 11th International Conference on Multiphase Flow in Industrial Plants, MFIP 2008. September 7-10, Palermo, Italy. p. 63-70. (2008)
[Konferensbidrag, refereegranskat]

In the present article, the predictions of two models describing turbulent gas-particle flow in a vertically oriented backward-facing step are compared to each other and with literature data. The first model is an Eulerian approach based upon the kinetic theory of granular flow, including turbulence modulation and interaction with the continuous phase. The gas-phase turbulence is predicted by use of a k-epsilon dispersed turbulence model, including inter-phase energy transfer between gas and particle fluctuating motions. The second model also uses an Eulerian approach coupled to a k-omega turbulence model. The latter model considers the transport of particles to the near-wall region due to turbulence intensity gradients, and particulate phase influences on the gas flow. It is shown that the combined effect has an impact on the two-phase flow. The derived models are validated with benchmark experimental results of a planar sudden expansion turbulent flow including particles.



Denna post skapades 2008-12-11. Senast ändrad 2009-10-28.
CPL Pubid: 81153

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära (2005-2017)
Institutionen för tillämpad mekanik (1900-2017)

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur

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