Volume 25 Issue 4
Apr.  1999
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Liu Tao, Liu Gang, Fang Ren, et al. Implementation of Elliptic-type Conditional Moment Closure Model to Nonpremixed Turbulent Reacting Flows[J]. Journal of Beijing University of Aeronautics and Astronautics, 1999, 25(4): 442-446. (in Chinese)
Citation: Liu Tao, Liu Gang, Fang Ren, et al. Implementation of Elliptic-type Conditional Moment Closure Model to Nonpremixed Turbulent Reacting Flows[J]. Journal of Beijing University of Aeronautics and Astronautics, 1999, 25(4): 442-446. (in Chinese)

Implementation of Elliptic-type Conditional Moment Closure Model to Nonpremixed Turbulent Reacting Flows

  • Received Date: 20 Mar 1998
  • Publish Date: 30 Apr 1999
  • The conditional moment closure (CMC) formulation considering both molecular and turbulent diffusions is derived and applied to simulate two dimensional nonpremixed turbulent reacting flows. Calculated results show good agreement with experimental ones. Results show that finite Damkohler number makes conditional averaged variables depart from their equilibrium values and the deviation is the maximum near stoichiometric mass fraction. The increasing Damkohler number increases conditional and unconditional mean reaction rates, and makes the conditional mean variable towards equilibrium limit.It is also shown that the reduction of dimensionality may result in certain deviations. For general elliptic-type reaction flow, it is suggested that the CMC formulation accounting for diffusion effect be employed.

     

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