Numerical Simulation of Flow and Particle Collision in a Rotating‐Drum Bioreactor
Numerical Simulation of Flow and Particle Collision in a Rotating‐Drum Bioreactor
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DOI：
10.1002/ceat.201100327
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发表时间：
2012-02
影响因子：
2.1
通讯作者：
Jian Jin;Shaoyuan Shi;Guoliang Liu;Qinghua Zhang;W. Cong
中科院分区：
文献类型：
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作者：
Jian Jin;Shaoyuan Shi;Guoliang Liu;Qinghua Zhang;W. Cong
通过数值模拟研究了转鼓生物反应器内的流体流动和颗粒碰撞强度，并选择传统的搅拌罐生物反应器进行比较。流体流动通过计算流体动力学 (CFD) 软件包 FLUENT (R) 进行模拟，而粒子碰撞强度则通过硬球模型进行数值模拟。转鼓生物反应器的湍流动能耗散率和最大颗粒碰撞强度比搅拌槽生物反应器小约一个数量级。转鼓生物反应器对生物浸出微生物的影响可能较小，因此预计在生物浸出过程领域具有巨大潜力。
Fluid flow and particle collision intensity in a rotating-drum bioreactor are investigated by numerical simulation and a conventional stirred-tank bioreactor is selected for comparison. Fluid flow is simulated by the computational fluid dynamics (CFD) software package FLUENT (R) whereas particle collision intensity is approached numerically through a hard-sphere model. The dissipation rate of turbulent kinetic energy and the maximum particle collision intensity in the rotating-drum bioreactor are about one order of magnitude smaller than those in the stirred-tank bioreactor. The rotating-drum bioreactor is likely to have a less severe impact on bioleaching microorganisms, and thus is expected to have great potential in the field of bioleaching processes.