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Theoretical analysis of superadiabatic combustion for non-stationary filtration combustion by excess enthalpy function

Citation

Mao, Mingming; Shi, Junrui; Liu, Yongqi; Lv, Jinsheng (2020), Theoretical analysis of superadiabatic combustion for non-stationary filtration combustion by excess enthalpy function, Dryad, Dataset, https://doi.org/10.5061/dryad.1vhhmgqq8

Abstract

The superadiabatic combustion for non-stationary filtration combustion is analytically studied. The non-dimensional excess enthalpy function (H) equation is theoretically derived based on a one-dimensional, two-temperature model. In contract to the H equation for the stationary filtration combustion, a new term, which takes into account the effect of non-dimensional combustion wave speed, is included in H equation for transient filtration combustion. The governing equations with boundary conditions are solved by commercial software Fluent. The predictions show that the maximum non-dimensional gas and solid temperatures in the flame zone are greater than 3 for equivalence ratio of 0.15. An examination of the four source terms in the H equation indicates that the thermal conductivity ratio (Γs) between the solid and gas phases is the dominative one among the four terms and basically determines H distribution. For lean premixed combustion in porous media, the superadiabatic combustion effect is more pronounced for the lower Γs.

Usage Notes

See attached ReadmeTemplate.docx for additional information.

Funding

National Natural Science Foundation of China, Award: Nos. 51876107