Phase interchange coefficients in bubbling fluidized beds.
نویسندگان
چکیده
منابع مشابه
CFD-DEM Investigation on van der Waals Force in Gas-Solid Bubbling Fluidized Beds
Effect of interparticle force on the hydrodynamics of gas-solid fluidized beds was investigated using the combined method of computational fluid dynamics and discrete element method (CFD-DEM). The cohesive force between particles was considered to follow the van der Waals equation form. The model was validated by experimental results from literature in terms of bed voidage distribution and Eule...
متن کاملDetermination of Cluster Hydrodynamics in Bubbling Fluidized Beds by the EMMS Approach
The local solid flow structure of gas-solid bubbling fluidized bed was investigated to identify and characterize the particle clusters. Extensive mathematical calculations were carried out using the energy-minimization multi-scale (EMMS) approach for evaluating cluster properties including the velocity, the size and the void fraction of clusters in the dense phase of the bed. The results showed...
متن کاملSolid Circulation Rate and Gas Leakage Measurements in an Interconnected Bubbling Fluidized Beds
Two-interconnected fluidized bed systems are widely used in various processes such as Fisher-Tropsch, hot gas desulfurization, CO2 capture-regeneration with dry sorbent, chemical-looping combustion, sorption enhanced steam methane reforming, chemical-looping hydrogen generation system, and so on. However, most of two-interconnected fluidized beds systems require riser and/or pneumatic transport...
متن کاملComputational Study of Heat Transfer in Bubbling Fluidized Beds with Geldart a Powder
Gas fluidization is widely used in industries and has been extensively studied either experimentally or mathematically. Recently, the coupled approach of discrete particle simulation (DPS) for solid phase and computational fluid dynamics (CFD) for gas phase has been proposed to study the heat transfer in fluidized beds at a particle level. The approach offers a convenient way to study the effec...
متن کاملCharacterizing the Hydrodynamics of Bubbling Fluidized Beds with Multivariate Pressure Measurements
Quantitative characterization of fluidized-bed hydrodynamics is important for process monitoring and validation of dynamic models. Using a two-dimensional fluidized bed of Geldart Group B particles, we experimentally investigated the situation where multiple pressure sensors were mounted on the walls of a bubbling fluidized bed. Our objective was to identify multivariate dynamic characteristics...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
سال: 1991
ISSN: 0021-9592,1881-1299
DOI: 10.1252/jcej.24.138