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Indexed by:会议论文

Date of Publication:2014-05-25

Included Journals:EI、CPCI-S

Volume:66

Page Number:261-264

Key Words:premixed combustion; porous media; EDC model; weighted average method

Abstract:A numerical study on the turbulent combustion in the porous media is conducted based on 2D staggered cylinders with the eddy dissipation concept model (EDC). The numerical results show that a discrepancy exists between the reaction rate descriptions of turbulent premixed combustion at different scales. For a quasi-steady case, the microscopic and macroscopic descriptions agree well with each other. However, during the rebalance process, this equilibrium state is difficult to reach under the lean fuel and higher velocity conditions, so the macroscopic method shows remarkable fluctuation, a step change even appears at the throat position. How to relate the two methods in a reasonable way is still an open subject. (C) 2015 Published by Elsevier Ltd.