静电式柴油机颗粒物传感器气固两相流数值模拟  

Numerical Simulation of Gas-solid Two-phase Flow of Particulate Matter Sensor in Electrostatic Diesel Engine

作　　者：资新运 王宏涛[2] 庞海龙 边浩然 张俊[2] 

机构地区：[1]军事交通学院军用车辆系,天津300161 [2]军事交通学院研究生管理大队,天津300161

出　　处：《军事交通学院学报》2016年第10期39-43,共5页Journal of Military Transportation University

基　　金：国家高技术研究发展计划项目(2013AA065303)

摘　　要：针对静电式车用柴油机颗粒物传感器,以发动机台架试验的环境作为边界,以Fluent软件为工具,分析颗粒物在气相中的受力情况,建立适合在Fluent求解的颗粒物的运动轨迹数学模型,模拟了静电式车用柴油机颗粒物传感器内部流动分布。模拟结果表明:内部通道气体和颗粒物流动性能较好,但浓度测试区会有颗粒物沉积,电离电极热端能对沉积颗粒物加热燃尽,能实现反复工作,从而提供一种结构简单、可以自动标零点和自清洁的颗粒物传感器。Considering the structure of particulate matter sensor in electrostatic diesel engine,the paper analyzes the stress situation of particle in gas phase with Fluent software while taking engine test bench environment as a boundary,and establishes a movement contrail mathematical model to simulate the internal flow distribution of particulate matter sensor. The simulation result shows that： the flow performance of gas and particle in internal channel is good but it leaves particle deposition in test area; the ionization animating electrode can heat and burnout the particle deposition and realizes re-work,which can provide a kind of particulate matter sensor which has simple-structured,automatically calibrating zero point and self-cleaning.

关 键 词：柴油机 气固两相流 离散相模型 颗粒物传感器 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]