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A novel ghost‐cell immersed boundary method for fully resolved simulation of char particle combustion has been developed. The boundary conditions at the solid particle surface, such as velocity, temperature, density, and chemical species concentration, are well enforced through the present method. Two semiglobal heterogeneous reactions and one homogeneous reaction are used to describe the chemical...
Direct numerical simulation with fully resolved immersed boundary method is employed to study a turbulent flow past two aligned spherical particles with different distances. A homogeneous isotropic turbulence field is generated as the inflow boundary condition and is kept developing throughout the simulation to avoid periodicity. The particle radius is about 4.7–7.9 times the Kolmogorov length and...
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