Weijie Yin

Weijie Yin
Harbin Institute of Technology | HIT · School of Energy Science and Engineering

PhD Candidate

About

10
Publications
479
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128
Citations

Publications

Publications (10)
Article
The framework of theoretical method is two-fluid model coupled with reaction process. The k-ε model is used for gas phase, and the kinetic theory of granular flow is employed for solid phase. In the simulation, gasification process consists of three parts: pyrolysis, homogenous reaction, and heterogeneous reaction. In the first stage, biomass parti...
Article
A multi-fluid Eulerian model with the kinetic theory of granular mixture (KTGM) is employed for multi-component particles to simulate the coal/biomass co-gasification process in the internal circulating fluidized bed (ICFB). The hydrodynamic characteristic and chemical reaction kinetics are analyzed. The simulations with the KTGM model are in good...
Article
Chemical-looping gasification (CLG) is a promising way for syngas production as the integration of chemical looping and gasification technology, which can avoid air separation with a high hydrogen extent in syngas. In this work, the multi-fluid model with chemical kinetics is employed to simulate the CLG performance in a bubbling fluidized bed reac...
Article
A clear discrepancy of particle size makes it difficult for the simulation of multiphase systems with binary mixture. In this work, a Two-Fluid Model (TFM)-Discrete Element Method (DEM) hybrid model incorporating chemical reactions is developed to investigate the oxygen-enriched biomass gasification process in a fluidized bed reactor. The bed mater...
Article
In-situ gasification chemical looping combustion (iG-CLC) depends on the solid fuel gasification rate and the contact between gasification products and oxygen carriers. In this work, a three-dimensional simulation is carried out to investigate the iG-CLC performance of biomass in a fluidized bed reactor by means of the multi-fluid model with the bu...
Article
The non-uniform flow caused by cluster greatly influences the performance in fast fluidization systems. Rough particles result in extra energy dissipation by particle rotation, which finally affects the cluster formation and evolution. In this study, the kinetic theory of rough sphere (KTRS) is employed and coupled with the cluster structure-depend...
Article
The steam absorption process in a fluidized bed of binary mixture is investigated to study the mass transfer performance of active particles surrounding inert particles by means of CFD approaches. A bubble-based drag model is incorporated to the multi-fluid model to account for the bubble effect on mixing and segregation behaviors of binary mixture...
Article
In the coal-direct chemical looping combustion process, the separation of char and ash from oxygen carriers is essential for reducing the requirement of fresh oxygen carriers and avoiding the char into the air reactor. In this work, a three-dimensional simulation is conducted to investigate the solid-solid separation process in a fluidized bed reac...
Article
The second-order moment (SOM) method is developed to describe the fluctuating anisotropy of particles in coal combustion process. Large-eddy simulation (LES) is employed for turbulence of gas phase. The LES-SOM model is coupled with chemical kinetics for coal combustion simulations and the anisotropy characteristic of particles is analyzed in circu...