Computational fluid dynamic (CFD) simulation of micromixing in a rotating packed bed
Journal Title: Science Paper Online - Year 2008, Vol 3, Issue 12
Abstract
Rotating packed bed (RPB), known as HIGEE, an acronym for high gravity has been widely used in absorption, desorption, distillation, oxidation, crystallization, precipitation, polymerization, production of nanoparticles. RPB utilizes centrifugal acceleration to intensify the mixing and mass-transfer processes. The turbulence reactions in RPB include flows in the packings, mixing and reactions. Based on computational platform, Fluent software, the turbulence reactions with two non-premixed solutions are simulated. The eddy-dissipation model is used to calculate the parallel competing reaction system, iodide-iodate system. In the eddy-dissipation model the overall rate of reaction is controlled by turbulent mixing, then the complex chemical kinetic rates can be safely neglected. The distributions of flow and species concentration are reasonable. The influences of initial reactant concentration and rotating speed on the segregation index were investigated. The segregation index seems to be sensitive to the reactant concentration. Higher rotating speed leads to lower segregation index, which is validated by others researches.
Authors and Affiliations
Wenjing YANG , Yundong WANG, Jianfeng CHEN, Weiyang FEI
Keywords
Related Articles
- EP ID EP113038
- DOI -
- Views 108
- Downloads 0
外源亚精胺对NaCl胁迫下黄瓜幼苗<br /> 多胺代谢的影响<br />
本文采用营养液水培，研究外源亚精胺（Spd）对NaCl胁迫下抗盐能力不同的两个黄瓜品种幼苗体内多胺（PAs）含量及PAs代谢关键酶活性的影响。结果表明，50 mmolL-1 NaCl溶液胁迫下黄瓜幼苗叶片和根系中精氨酸脱羧酶（ADC）、鸟氨酸脱羧酶（...
废旧阻燃电脑外壳的热解动力学
通过对含有四溴双酚A阻燃剂(tetrabromobisphenol A, TBBPA)的废旧电脑外壳（红外分析鉴定为丙烯腈-丁二烯-苯乙烯树脂，acryolonitrilr butadiene styrene, ABS）进行热裂解试验和动力学研究，得到不同升温条件下（5 K•min-1, 10 K•min-1,...
基于DSP的草莓采摘机器人关节控制器的研究
本课题以永磁同步电机为执行电机，采用三闭环位置伺服控制方案，直轴电枢电流为0的矢量控制策略，制作了以 DSP为处理器的运动控制器；采用ACPM750E为电机功率驱动模块，进行相应控制程序的设计。实验结果表明基于DSP的机器人关节控制器的...
Research on key technology and implementation program of the inland management system based on multifunctional navigation mark
Extends the functions of navigation mark, integration of various sensors, to detect near the fairway buoy hydrology, weather, pollution and channel information, and aids to navigation maintenance and other related inform...
Modelling the precipitation of Nb(C, N) on dislocations<br /> in micro-alloyed steels<br />
A physically based mathematical model was established for prediction of flows stress, recrystallization and precipitation during thermo-mechanical processing (TMCP). It contains several interactional submodels for calcul...