Computational fluid dynamics for dense gas–solid fluidized beds: a multi-scale modeling strategy
نویسندگان
چکیده
منابع مشابه
Computational Fluid Dynamics for Dense Gas-solid Fluidized Beds: a Multi-scale Modeling Strategy
Dense gas-particle flows are encountered in a variety of industrially important processes for large scale production of fuels, fertilizers and base chemicals. The scale-up of these processes is often problematic and is related to the intrinsic complexities of these flows which are unfortunately not yet fully understood despite significant efforts made in both academic and industrial research la...
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Dense gas-particle flows are encountered in a variety of industrially important processes for large-scale production of fuels, fertilizers and base chemicals. The scale-up of these processes is often still problematic, which can be related to the intrinsic complexities of these flows, which are unfortunately not yet fully understood despite significant efforts made in both academic and industri...
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In the present paper, partial cavitation over various head-forms was studied numerically to predict the shape of the cavity. Navier-Stokes equations in addition to an advection equation for vapor volume fraction were solved. Mass transfer between the phases was modeled by a sink term in vapor equation in the numerical analysis for different geometries in wide range of cavitation numbers. The r...
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To describe the hydrodynamic phenomena prevailing in large industrial scale fluidised beds continuum models are required. The flow in these systems depends strongly on particle-particle interaction and gas-particle interaction. For this reason proper closure relations for these two interactions are vital for reliable predictions on the basis of continuum models. Gas-particle interaction can be ...
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Dense Medium Cyclone is a high capacity device that is widely used in coal preparation. It is simple in design but the swirling turbulent flow, the presence of medium and coal with different density and size fraction and the presence of the air-core make the flow pattern in DMCs complex. In this article the flow pattern simulation of DMC is performed with computational fluid dynamics and Fluent...
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ژورنال
عنوان ژورنال: Chemical Engineering Science
سال: 2004
ISSN: 0009-2509
DOI: 10.1016/j.ces.2004.07.013