|
|||||
|
|
| 高雷诺数对无量纲参数的影响 | |
| 引用本文： | 赵新顺,舒歌群,刘书亮,户东.高雷诺数对无量纲参数的影响[J].拖拉机与农用运输车,2006,33(1):44-46,49. |
| 作者姓名： | 赵新顺 舒歌群 刘书亮 户东 |
| 作者单位： | 1. 天津大学,天津,300072;军事交通学院,天津,300161 2. 天津大学,天津,300072 3. 宗申摩托车集团,重庆,400039 |
| 摘 要： | 研究了高雷诺数对气体滚流强度和流量系数的影响。试验表明,气门升程和气道压差小时,难以形成充分发展的湍流,随着气门升程的增大,无量纲滚流强度和流量系数呈上升趋势,并且波动较大;充分发展时,可压缩气体的滚流强度和流量系数恒定不变,不可压缩气体的滚流强度比真实值偏大,而流量系数比真实值偏小,误差大小只与压力比有关,并随着压力比的增大而增大。 |
| 关 键 词： | 高雷诺数 滚流强度 流量系数 可压缩气体 不可压缩气体 |
| 文章编号： | 1006-0006（2006）01-0044-03 |
| 收稿时间： | 2005-08-19 |
| 修稿时间： | 2005-08-19 |
Effects of High Reynolds Numbers on Non-Dimension Parameters |
|
| ZHAO Xin-shun,SHU Ge-qun,LIU Shu-liang,HU Dong.Effects of High Reynolds Numbers on Non-Dimension Parameters[J].Tractor & Farm Transporter,2006,33(1):44-46,49. | |
| Authors: | ZHAO Xin-shun SHU Ge-qun LIU Shu-liang HU Dong |
| Institution: | 1. Tianjin University, Tianjin 300072, China; 2. Military Traffic Institute, Tianjin 300161, China; 3. Zongshen Motorcycle Group, Chongqing 400039, China |
| Abstract: | Research has been made about the effects of high Reynolds numbers on the tumble intensity and flow(coefficient) in a self-made steady flow test rig for the port.Based on the experiments,analysis has been made with combination of related(theories),which provides references for industrial application.The result shows that it is difficult to make fully(developed) turbulent at lower valve lift and a little port pressure drop,with ascending valve lift,the non-dimension parameters tumble intensity and the flow coefficient become bigger and bigger along with greater waving.After making fully developed turbulent flow,the tumble intensity and the flow coefficient of compressible gas are constant,the incompressible gas'coefficient is smaller than the truth,but the tumble intensity is bigger.Errors are relating only with the pressure ratio. |
| Keywords: | High reynolds numbers Tumble intensity Flow coefficient Compressible gas Incompressible gas |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |