摘要
应用CFD(computational fluid dynamics)对某型号发动机双进气道进行了数值模拟,计算得出气门在不同升程下的进气流量系数、涡流比及滚流比。通过将计算结果与试验结果进行对比,显示数据吻合良好,流量系数较高,并总结出了不同升程下气道流量系数的变化规律;同时,模拟结果表明气道-缸内具有良好的进气效果和明显的缸内滚流运动,进一步验证了CFD模拟的气道结构的合理性。
CFD （Computational Fluid Dynamics） was applied to numerical simulation of double intake ports of a certain type of engine, and the flow coefficient, swirl ratio and tumble ratio of vent valve under different lifts were obtained.Through comparing the calculation results with the test results, the data show good agreement and higher flow coefficient,and the variation rule of flow coefficient of airway under different lifts is summarized. Meanwhile, simulation results show that： the airway-in-cylinder has a good intake effect and obvious in-cylinder tumble flow, which further verifies the rationality of CFD simulation of the ports structure.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2017年第8期115-118,共4页
Journal of Chongqing Jiaotong University(Natural Science)
基金
国家自然科学基金项目(51305472)
重庆市自然科学基金项目(CSTC2013yykf B0184)
重庆市城市轨道交通车辆系统集成与控制重点实验室项目(csct2015yfpt-zdsys30001)
关键词
车辆工程
双进气道
CFD
流量系数
滚流
vehicle engineering
double intake ports
CFD
flow coefficient
tumble flow
