| 水流能耗率极值原理及其水力学实例研究 |
| |
| 引用本文： | 黄才安,奚斌. 水流能耗率极值原理及其水力学实例研究[J]. 长江科学院院报, 2002, 19(5): 7-9 |
| |
| 作者姓名： | 黄才安 奚斌 |
| |
| 作者单位： | 扬州大学,水利与建筑工程学院,江苏,扬州,225009;扬州大学,水利与建筑工程学院,江苏,扬州,225009 |
| |
| 基金项目： | 江苏省高校省级重点实验室开放课题 (KJS0 10 60 ) |
| |
| 摘 要： | 研究水力学及河流动力学问题，有两种易混淆的假说，即最小能耗率理和最大能耗率理论。采用普通水力学的一些实例，验证了两种假说在本质上是一致的，区别在于问题的约束条件不同，当流量一定时，水流能量对应于最小能耗率，而当水力坡度（或水头损失）一定时，水流能量对应于最大能耗率。
|
| 关 键 词： | 能量耗散 极值假说 水力学 明渠水流 |
| 文章编号： | 1001-5485(2002)05-0007-03 |
| 修稿时间： | 2002-05-08 |
Study on extreme theories of energy consumption and its hydraulics examples |
| |
| HUANG Cai?an,XI Bin. Study on extreme theories of energy consumption and its hydraulics examples[J]. Journal of Yangtze River Scientific Research Institute, 2002, 19(5): 7-9 |
| |
| Authors: | HUANG Cai?an XI Bin |
| |
| Abstract: | In hydraulics and river dynamics studies, there are two confused hypotheses: minimum energy consumption rate theory and maximum energy consumption rate theory. By using of ordinary open?channel hydraulics examples, it is found that two theories are actually identical, but their differences result from different constraint functions. When the discharge is given, there is a minimum energy consumption rate; but when the energy slope or head losses is given, there is a maximum energy consumption rate. |
| |
| Keywords: | energy consumption extreme hypotheses hydraulics open?channel flow |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
