高压脉冲电场同轴处理室的仿真优化

高压脉冲电场杀菌技术是一种新型非热杀菌技术,处理室用来装载待处理物料并在处理室内直接施加脉冲电场。针对自主设计的一种电极间距可调、处理室内腔体可更换的新型中试规模的同轴处理室,使用COMSOL软件建立脉冲电场杀菌系统三场耦合的数学模型模拟处理室内的电场强度、流料特性及温度分布,为同轴处理室的结构优化提供依据。仿真结果表明正电极内圆边缘处的电场强度不均匀,对正电极倒圆角后的处理室更为适用。

Simulation and optimization on coaxial treatment chamber for pulsed electric field

PEF sterilization technology is a novel non-thermal sterilization technique, the processing chamber is applied directly, for loading the material to be processed in a processing chamber and pulsed electric field. A paper designed pilot scale electrode spacing is adjustable, replaceable processing chamber cavity coaxially novel process chamber, the system established by pulsed electric fields coupled three COMSOL software mathematical model of the electric field intensity of the processing chamber, the material flow characteristics and temperature distribution, provide the basis for structural optimization coaxial treatment chamber. Simulation results show that non-uniform electric field strength at the edge of the inner circle of the positive electrode, the positive electrode treatment chamber after rounding is more applicable.