作　　者： ; ; ;

机构地区： 大连交通大学

出　　处： 《内燃机车》 2009年第6期16-18,21,共4页

摘　　要： 以实际产品气道为基础,使用UG软件完成气道的三维实体造型与修改,用三维流体动力学软件AVL-FIRE完成稳流试验台中气道—气缸流动的三维数值模拟计算,并对螺旋进气道结构参数进行优化。结果表明:螺旋进气道的性能是气道结构参数之间交互作用的结果,该气道的流通性能很好。在三维流动分析的基础上提出了一系列的改进措施;对比各种改进措施下的模拟计算结果,发现在不减小流量系数的前提下,通过适当地减小气门凸台厚度和增大涡流室高度相结合的方法来增大涡流室容积可以明显提高产生涡流的能力,是一种有效而又合理的改进办法。 On the basis of actual product's airway,we achieve the airway's three-dimensional solid modeling and revising with the UG software,achieve the three-dimensional numerical simulation and calculation of the airway-cylinder flow on the steady flow experimental device with the three-dimensional fluid dynamics soflware AVL-FIRE,and oplimize spiral inlet's structural parameters.Results show that the performance of spiral inlet is result of the airways structural parameters interaction.This airway's flow performance is very good.On the basis of three-dimensional flow analysis,we propose a series of improved measures;comparing the simulation results under every improved measure,we find that as long as the flow coefficient doesn't reduce,the combination of reducing valve lug boss thickness and increasing swirl chamber height to increase swirl chamber volume can increase capacity of making swirl obviously,and that's a effective and reasonable way.

关 键 词： 螺旋进气道 三维数值模拟 计算流体动力学 流量系数 涡流比

领　　域： [动力工程及工程热物理]