基于柴油机进气道有限元仿真的研究

鉴于柴油机螺旋进气道的结构复杂性和利用实验的方法了解气道内气体流动情况的难度,利用CAE技术探求气道几何形状对气体流动状况的影响规律,对所设计的气道的性能进行预测,从理论上提出改进和优化的方法,并利用数值建模将模型导入到有限元分析软件ANSYS中,将气道分段采取不同的网格对每部分进行分网处理,按照气门进出口压力差和升程等工况对气道内流动进行分析,使用ANSYS的后处理模块对计算结果进行处理,得到气道内、气道出口的速度分布、紊流动能分布等结果.

Finite Element Simulation of Intake Port for Diesel Engine

Because of the complexity of intake ports and difficulty of knowing flow condition in intake port by experiment,we use CAE technique to research the law of intake ports geometry influence on airflow condition.Therefore,we can predict the performance of intake ports,and present theoretical methods for improvement and optimization.We also use numerical modeling import model into ANSYS,and exert mesh process for different parts of intake ports.According to working condition,such as differences of pressure betw...