发动机气道稳流试验流动过程的相似分析  

Similarity Analysis of Stable Flow Process in Engine's Port

作　　者：梅德清[1] 王忠[1] 蔡茂春 崔宇峰[3] 崔砚宏[3] 

机构地区：[1]江苏大学,镇江212013 [2]江苏江动集团有限公司 [3]镇江船艇学院

出　　处：《小型内燃机与摩托车》2003年第6期18-20,共3页Small Internal Combustion Engine and Motorcycle

摘　　要：通过对发动机气道内气体流动过程的相似分析 ,在雷诺Re 准则数足够大的前提下 ,非定性准则欧拉Eu 数和相似不变量无因次涡流NR 保持不变。这就证实通过稳流试验来测量气道的流通性能是可行的。通过数理推导 ,评价参数流量系数 μσ其实就是欧拉EuBy the similarity analysis of flow process in engine's port, it's found that at the base that Renold number is big enough, in-qualitative rule Euler number Eu and similar invariable dimensionless swirl NR keep unaltered. This makes sure that it is feasible to obtain port's flowing performance by stable flow test. Flowing coefficient, which is an estimating parameter, just is another presenting form of Euler number.

关 键 词：发动机 气道 稳流 相似流动 流通系数 

分 类 号：TK403[动力工程及工程热物理—动力机械及工程]