涡流室式燃烧室连接通道μ对相关参数的影响  

The Influence of Discharge Coefficients of Connecting Passages in Swirl Combustion Chamber on Some Related Parameters

作　　者：黄荣华[1] 刘永长[1] 

机构地区：[1]华中理工大学船舶和海洋工程系

出　　处：《华中理工大学学报》1995年第9期63-68,共6页Journal of Huazhong University of Science and Technology

基　　金：国家自然科学基金

摘　　要：应用不同的计算连接通道流量系数μ的经验公式及定值流量系数，对Ｓ１９５柴油机压缩膨胀过程的相关参数进行了数值计算。分析了流量系数的取值误差对涡流室式和变通道涡流室式燃烧室拖动参数、热力参数和流动参数的影响。研究表明，流动参数、拖动参数中压缩膨胀过程工质流经通道的平均损失压力参数对流量系数的取值精度较敏感，而拖动参数中的其他的参数和热力参数对流量系数的取值精度不太敏感。arious empirical formulae for computing the discharge coefficients and constant valuedischarge coefficients are used to compute some related parameters of the compression andexpansion process in a model S195 diesel engine. The influences of the error of the value ofdischarge coefficients taken on the driving parameters,thermodynamic parameters and flowparameters on the swirl combustion chamber and the swirl combustion with variable throatare analyzed. The flow parameters and the mean flow loss pressures of an actuating mediumflowing through the connecting passage during the compressiOn and expansion process in thedriving parameters are highly sensitive to the acturacy of the values of discharge coefficientstaken vvhereas the other parameters in the driving parameters and the thermodynamic para-meters are not so sensitive.

关 键 词：柴油机 涡流室式燃烧室 流动参数 燃烧室 

分 类 号：TK423.3[动力工程及工程热物理—动力机械及工程]