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It is well known that premixed and non-premixed flamelets coexist in the combustion system, especially for multiphase combustion (Luo et al., 2011; Bai et al., 2016). In this work, a multi-regime combustion model for partially premixed multiphase combustion (2PMC) is developed in the framework of large eddy simulation (LES). In this model, the multi-regime combustion mode is decomposed into two pure...
A piloted pulverized coal jet flame was simulated by Large Eddy Simulation (LES). For the sub-grid scale (SGS) effects of the turbulence velocity and the scalar fluctuation of the gas flow on the coal particles, the velocity-scalar joint filtered density function (VSJFDF) model was used. Other models such as the governing equations for particles and coal combustion sub-models were also presented....
A velocity–scalar joint filtered density function (VSJFDF) transport equation was derived for the fluid flow field experienced by the particles in the evaporating gas–droplet two-phase flow. In this model, the large eddy simulation (LES) is used to simulate the fluid flow and the Lagrangian method is used to simulate the motion of the particle. In order to consider the sub-grid scale (SGS) effects...
In order to gain a better insight in the entrainment coefficient and turbulence properties of a spatial evolving round jet flow in the jet development from the near-field region to the far-field region, we performed Direct Numerical Simulation (DNS) of a round jet with Reynolds number equal to 5000. A computational grid consisting of about 500million is used in present DNS simulation, which is the...
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