| 微管沿程水头损失计算方法试验研究 |
| |
| 引用本文： | 王永功,范兴科,吴普特.微管沿程水头损失计算方法试验研究[J].灌溉排水学报,2005,24(3):68-70. |
| |
| 作者姓名： | 王永功 范兴科 吴普特 |
| |
| 作者单位： | 中国科学院水利部水土保持研究所 陕西杨凌712100
(王永功，范兴科)，中国科学院水利部水土保持研究所 陕西杨凌712100(吴普特) |
| |
| 基金项目： | 国家“863”节水农业专项课题(2002AA2Z4081) |
| |
| 摘 要： | 对公称内径分别为1、2mm的塑料微管进行了水力性能测试和分析。结果表明:在测试条件下,管径对水力性能影响较大,1mm微管流态以层流为主,2mm微管存在层流和紊流;按照经典的水力学计算公式和经验公式对其沿程水头损失进行计算,结果与实际情况不符,并存在较大的偏差,因此现行的沿程水头损失公式不适宜于微小管道。
|
| 关 键 词： | 微管 水头损失 计算方法 |
| 文章编号： | 1000-646X(2005)03-0068-03 |
| 修稿时间： | 2005年2月2日 |
The Study on the Head Loss Calculation of Micro-tube |
| |
| WANG Yong-gong,FAN Xing-ke,WU Pu-te.The Study on the Head Loss Calculation of Micro-tube[J].Journal of Irrigation and Drainage,2005,24(3):68-70. |
| |
| Authors: | WANG Yong-gong FAN Xing-ke WU Pu-te |
| |
| Abstract: | According the principle of hydraulics, we study on hydraulic power characteristic of micro-tube of two kinds diameter, 1 mm and 2 mm.,integrating with the practice of dripping irrigation. Through the study result we find the diameter has more important influence on hydraulic power characteristic. Under the test condition the main flow state is laminar flow as diameter is 1 mm, another micro-tube has laminar and turbulence state. As we calculate the head loss by the empirical formula, we find the result has biggish error with the fact, so we think those formula don't adapt to the study and application of micro-tube hydraulic. |
| |
| Keywords: | micro-tube head loss calculation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
