Multiscale modeling of gas-fluidized beds
Web13 mar. 2013 · A set of novel simulation approaches and hierarchically distributed models were developed and implemented into the multiscale simulation environment for solids processes. The population balance model (PBM) was used for the simulation of the global production process on the macroscale. Web1 ian. 2005 · Our understanding of the hydrodynamics of gas-solid flow inside fluidized beds is however still far from satisfactory due to the existence of dynamic, multiscale …
Multiscale modeling of gas-fluidized beds
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WebNumerical models of gas-fluidized beds have become an important tool in the design and scale up of gas-solid chemical reactors. However, a single numerical model which includes the solid-solid and solid-fluid interaction in full detail is not feasible for industrial-scale equipment, and for this reason one has to resort to a multiscale approach. WebNumerical models of gas-fluidized beds have become an important tool in the design and scale up of gas-solid chemical reactors. However, a single numerical model which includes the solid-solid and solid-fluid interaction in full detail is not feasible for industrial-scale equipment, and for this reason one has to resort to a multiscale approach. The idea is …
WebGas-solid fluidized beds are widely applied in many chemical processes involving physical and/or chemical transformations, and for this reason they are the subject of intense … WebDr. Qingang Xiong is currently a senior scientist at General Motors Corporation, USA, developing CFD capability for modeling vehicle fuel system. Dr. ... mathematical modeling and process control for fluidized bed drying processes, process tomography and 3D image reconstruction software developing, and monitoring and control for granulation ...
WebA numerical simulation study was carried out to study the combined thermal behavior and hydrodynamics of a pseudo-2D fluidized bed using a computational fluid dynamics–discrete element method (CFD-DEM). To mimic the effect of heterogeneous exothermic reactions, a constant heat source was implemented in the particle energy equation. The effects of … Web1 ian. 2008 · Fluidized beds are complex systems with non-linearly strong coupling of multi-scale and multi-physical processes which -in the case of combustion -have a crucial …
WebNumerical models of gas-fluidized beds have become an important tool in the design and scale up of gas-solid chemical reactors. However, a single numerical model which …
WebMathematical Modelling of Gas Flow with Heavy Solid Particles Based on Eulerian Approach. Complex hydrodynamic behavior of circulating fluidized beds makes their … meisel woods conservation areaWeb10 iul. 2013 · Numerical models of gas-fluidized beds have become an important tool in the design and scale up of gas-solid chemical reactors. However, a single numerical model which includes the solid-solid and solid-fluid interaction in full detail is not feasible for industrial-scale equipment, and for this reason one has to resort to a multiscale approach. meisenbach companyWebMultiscale modelling has proven to be indispensable in the design and optimisation of fluidized bed reactors. Most coarse-grained models assume that the solid particles are of spherical shape because this simplifies the treatment of gas-solid drag and particle collisions. However, many particles used in fluidized bed (bio)reactors are non ... meisenthal boule de noël 2021 commandeWeb25 nov. 2024 · A concise introduction to the methods for multiscale CFD simulation of gas-solid fluidization was firstly provided, which include direct numerical simulation, (coarse-grained) discrete particle method, kinetic method, continuum method and mesoscale-structure-based multiscale method. meisen gooley bayreuthWeb1 iul. 2024 · Several tips regarding the multi-scale gas-solid flow can be obtained as: (i) Bubble volume in the bed behaves with a log-normal distribution pattern and the largest bubble appears in the central part of the bed. (ii) The horizontal chord length of bubbles is the largest in the central region but small near the wall. meisenheimer tool \u0026 dye morristown tnWebKeywords dense gas-solid flow, gas-fluidized beds, multi-scale modelling 1. Introduction Dense gas-particle flows are frequently encountered in a variety of industrially important gas-solid contactors, of which the gas-fluidized bed can be mentioned as a very important example. Due to their favorable mass and heat transfer characteristics, gas ... meisenheimer funeral home in tipton missouriWebHoef, van der, MA & Kuipers, JAM 2005, Multi-scale modelling of gas-fluidized beds. in Proceedings of the Computational Fluid Dynamics in Chemical Reaction Engineering IV. … napa county covid tier