动压式油气分离器特性的量纲分析  

Study on dynamic pressure gas-oil separator characteristics using dimension analysis

作　　者：张小彬[1] 朱卫兵[1] 张碧婷 胡亮 ZHANG Xiaobin;ZHU Weibing;ZHANG Biting;HU Liang(College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2017年第11期1757-1761,共5页Journal of Harbin Engineering University

摘　　要：为了研究动压式油气分离器的分离与阻力性能,本文基于航空发动机滑油系统实验台,采用量纲分析方法建立了适用于工程应用的4种动压式油气分离器分离特性和2种阻力特性预测模型。误差检验分析和实验结果表明:4种分离特性预测模型的最大误差均小于5%,平均误差小于3%,最小二乘法得到的模型精度更高,逐步选择法则更简洁;2种阻力特性预测模型的最大误差均小于5%,平均误差小于2%,前向选择法建立的模型更优;模型适用工况为:滑油流量4.5~7.0 L/min,气液掺混比1∶1。This study analyzes the separation and resistance performance of a dynamic pressure gas oil separator.Based on the experimental system of an aeroengine lubricating oil system and using dimensional analysis,four models were established to predict the separation characteristics,and two models were established to predict the resistance characteristics of a dynamic pressure gas oil separator for engineering applications.Error analysis and experimental results show that the maximum error of the seperation prediction model is less than5%,the average error is less than3%,the model established by least square method has higher precision,and the stepwise selection method is the most accurate.The maximum error for both resistance models is less than5%,the average error is less than2%,and the model established using forward selection is better than backward selection method.The applicable condition for the models has an oil flow of4.5~7.0L/min and an air to liquid mixture ratio of1∶1.

关 键 词：实验台 动压式油气分离器 量纲分析 分离特性 阻力特性 预测模型 误差 

分 类 号：V233.4[航空宇航科学与技术—航空宇航推进理论与工程]