Dynamic modeling of the circulating fluidized bed riser
نویسندگان
چکیده
منابع مشابه
Gas-solid Turbulent Flow in a Circulating Fluidized Bed Riser; Numerical Study of Binary Particle Mixtures
A numerical simulation was performed on a turbulent gas-particle multi-phase flow in a circulating fluidized bed riser based on a hard-sphere discrete particle model (DPM) for the particle phase and the Navier-Stokes equations for the gas phase. The sub-grid scale stresses (SGS) were modeled with the SGS model proposed by Vreman (2004). The model enables the calculation of an arbitrary particle...
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P.Ragothaman,[email protected] Dr.N.V.Mahalakshmi,[email protected] Institute for Energy Studies, Anna University, Chennai-25,Tamilnadu, India. P.sudhakar,[email protected] Abstract Circulating fluidized bed reactors are widely applied in industry for power generation in boilers and gasifier. Computational Fluid dynamics modeling of hydrodynamics and heat transfer can be an effe...
متن کاملGas-Solid Turbulent Flow in a Circulating Fluidized Bed Riser: Numerical Study of Binary Particle Systems
Numerical simulations were performed of a turbulent gas-particle multiphase flow in a circulating fluidized bed riser using a hard-sphere discrete particle model (DPM) for the particle phase and the Navier-Stokes equations for the gas phase, where the subgrid scale stresses (SGS) were modeled with the SGS model proposed by Vreman. The model enables the simulation of systems with an arbitrary pa...
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In this paper, combustion of char in the riser of circulating fluidized bed was modeled using ASPEN PLUS. Since physical and chemical phenomena are involved in the process, the model integrates the two-phase hydrodynamic sub-model with the reaction sub-model derived from the literature. In the proposed model, the fluidized bed is divided into several sections and the behavior of each section wa...
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In this paper computational analysis of circulating fluidized bed combustion using the fluent software is analysed. This work is concerned about gas–solid two-phase mixtures flowing upwards through the fast beds. The procedures studied are applicable to all types of fluidized-bed boilers. The type of information resulting from various ways of analyzing the pressure and temperature in fluidized ...
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ژورنال
عنوان ژورنال: Powder Technology
سال: 2016
ISSN: 0032-5910
DOI: 10.1016/j.powtec.2015.12.045