摘要
通过任意拉格朗日-欧拉(ALE)方法直接对N-S方程进行数值求解,采用CFD商用软件AN-SYS,对某385型柴油机喷油系统内流体流动的液力过程进行数值模拟仿真,较为准确地给出了喷油器内燃油的速度场分布,分析了高压油管的结构参数对速度场的影响。并结合排放特性实验,对泵-管-嘴喷油系统的结构参数进行优化。为柴油机燃油喷射系统的研究提供理论依据,缩短了产品的开发周期。
Arbitrary Lagrange-Eulerian （ALE） computing method is used to calculate the N-S Equation directly. Numerical simulation of fluid flow process in the fuel injection system of a certain type 385 diesel engine was performed using the commercial CFD software ANSYS. The velocity distribution in the nozzle was obtained, and the influence of the structure of high-pressure fuel pipe to the velocity distribution was analyzed in this paper. Combining with exhaust emission test, the structure parameter of pump-tube-nozzle fuel injection system was optimized. The simulation is very useful for providing theoretical evidence for the design of injection system, and shortening the product development period.
出处
《小型内燃机与摩托车》
CAS
北大核心
2007年第3期37-40,共4页
Small Internal Combustion Engine and Motorcycle
关键词
柴油机
液力过程
数值模拟
排放实验
Diesel engine, Fluid flow process, Numerical simulation, Emission test
