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论文类型：期刊论文

发表时间：2015-02-01

发表刊物：NUMERICAL HEAT TRANSFER PART A-APPLICATIONS

收录刊物：SCIE、EI

卷号：67

期号：3

页面范围：293-312

ISSN号：1040-7782

摘要：With porous combustor as engineering background, the mass dispersion process of methane and air in highly porous media is studied numerically based on a simplified model for the periodical structure of the porous media. The computational results obtained from the microscopic flow field within a unit cell, i.e., a representative elementary volume, into which a low Reynolds number turbulent model is incorporated, are employed to compute the longitudinal and transverse dispersion coefficients through a volume average approach. The results are compared with experimental data and empirical formulas available in the literature, and a reasonable agreement is achieved.