| 射水清淤船管道压力损失和喷嘴流量的研究 |
| |
| 引用本文： | 王 楠,何炎平,刘亚东,赵永生.射水清淤船管道压力损失和喷嘴流量的研究[J].水运工程,2013(2):42-46. |
| |
| 作者姓名： | 王 楠 何炎平 刘亚东 赵永生 |
| |
| 作者单位： | 上海交通大学 海洋工程国家重点实验室,上海 200240 |
| |
| 摘 要： | 射水清淤船作为一种新型的疏浚及整平航道的工具,得到了广泛的应用,精确计算其管道压力损失和喷嘴流量强度将直接关系到该船抽水泵的选取及清淤效果.以某一射水清淤船为研究对象,基于不同的喷嘴形状和分布情况,建立了3种计算模型,分别对其管道压力损失和喷嘴流量强度进行了分析对比和评价.计算结果表明,圆台形喷嘴的管道局部压力损失比圆柱形喷嘴小.此外,喷嘴的流量强度与该船清淤过程中产生的混合泥层的速度及厚度有关,可以通过改变喷嘴流量强度来实现更好的清淤效果.
|
| 关 键 词： | 射水清淤船 管道压力损失 喷嘴流量强度 计算模型 |
Flow resistance in pipelines and nozzle flow analysis of water injection dredging |
| |
| WANG Nan,HE Yan-ping,LIU Ya-dong and ZHAO Yong-sheng.Flow resistance in pipelines and nozzle flow analysis of water injection dredging[J].Port & Waterway Engineering,2013(2):42-46. |
| |
| Authors: | WANG Nan HE Yan-ping LIU Ya-dong and ZHAO Yong-sheng |
| |
| Institution: | State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China;State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China;State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China;State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
| |
| Abstract: | Water injection dredging (WID) has been widely used as a new dredging and leveling tools.Accurate calculation of pipe pressure loss and nozzle flow intensity is directly related to the type of ship pump selection and dredging effects. Three computational models are established by changing the shapes and distributions of the nozzles, the flow resistance and nozzles flow intensity of which are compared, analyzed and evaluated respectively. The calculated results show that the pressure loss in pipes of truncated cone shaped nozzles is smaller than that of cylindrical nozzles. Besides, the nozzle flow intensity is related to the speed and thickness of the layer in the process of dredging. We can change the nozzle flow intensity for better cleaning results. |
| |
| Keywords: | water injection dredging flow resistance nozzle flow intensity computational model |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《水运工程》浏览原始摘要信息 |
| 点击此处可从《水运工程》下载免费的PDF全文 |
|
