基于AMESim的燃料泵吸液特性仿真研究  

Simulation of Fuel Suction Characteristics of Fuel Pump Based on AMESim

作　　者：章华益 彭博[1] 杨赪石[1] 张孝毅[1] 杨玉靖 

机构地区：[1]中国船舶重工集团公司第705研究所,陕西西安710077 [2]水下信息与控制重点实验室,陕西西安710077 [3]山西平阳重工机械有限责任公司,山西侯马043003

出　　处：《鱼雷技术》2016年第1期48-52,共5页Torpedo Technology

摘　　要：为了研究燃料泵的吸液特性,使用AMESim软件建立了燃料泵仿真模型,以水下航行器的燃料泵为例进行仿真,仿真结果与试验结果基本吻合。在此基础上,进一步分析了进口压力和转速对燃料泵进口流量的影响,以柱塞腔内无空气析出为目标函数,使用遗传算法求得进口压力和转速的临界关系。仿真结果表明,在泵轴转角270°附近,此时柱塞处于吸液中间阶段,柱塞腔内压力会达到最低值;当进口压力过低或转速过高时,柱塞腔的最低压力会低于空气分离压,燃料析出空气产生气穴现象,使得进口流量明显低于理论值。In order to study fuel suction characteristics of a fuel pump, a simulation model of a fuel pump is established by the software AMESim. Taking a fuel pump of an underwater vehicle for example to conduct simulation, the results accord with the experimental data. Based on the simulation results, the influences of inlet pressure and rotational speed on inlet flow rate are analyzed, and the critical relation between inlet pressure and rotational speed is achieved with genetic algorithm taking no air release in the piston chamber as an objective function. Simulation results show that the pressure in cylinder chamber approaches the minimum at about 270° of rotational angle, where the piston is in medium of fuel suction process; and if the inlet pressure is lower or rotational speed is higher than their critical values, the minimum pressure in piston chamber gets lower than the separation pressure of air, as a result, fuel releases air to generate cavitation, hence the inlet flow rate becomes significantly lower than the theoretical value.

关 键 词：水下航行器 燃料泵 吸液特性 遗传算法 气穴现象 

分 类 号：TJ630.32[兵器科学与技术—武器系统与运用工程]