环形空间中水击基本方程的推导  

The derivation of water hammer principal equations in annular space

作　　者：奚斌[1,2] 韩洪升[1] 刘扬[1] 周济人[2] 钟开伟 

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318 [2]扬州大学水利科学与工程学院,江苏扬州225127 [3]金湖县水务局,江苏金湖211600

出　　处：《扬州大学学报（自然科学版）》2013年第2期35-39,共5页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50706041);"十二五"国家科技支撑项目资助(2102BAD08B03-2)

摘　　要：为研究轴流泵和石油开采等工程中环形空间液流的运动规律和现象,探讨环形空间水击问题.针对环形空间的结构特点和流体运动特性,根据牛顿第二定理推导出环形空间水击运动的基本方程,根据质量守恒定律推导出环形空间水击的连续性基本方程.把相应公式与圆管流进行类比、分析,进一步对环形空间水击基本方程进行简化,讨论了方程中液流摩阻项的计算方法及其对方程的影响.所得的环形空间水击基本方程可为环形空间液流流动规律和特性的进一步研究提供参考.In order to research the phenomenon and movement regular pattern of liquid flow in annular space during projects such as oil extraction and drilling, the water hammer problem of liquid flow in annular space was discussed. According to the structure characteristics of the annular space and the motion characteristics of flow, the movement principal equation and continuity equation of water hammer were obtained respectively based on Newton＇s second law and law of mass conservation. By analogy and analysis on homologous formulas in circular tube, water hammer principal equations in annular space were further simplified. The calculating method of friction drag and its effect on equations were discussed. The obtained water hammer principal equations can provide ref- erence for the further research of mobility pattern and characteristics of liquid flow in annular space.

关 键 词：环形空间 水击 基本方程 摩擦切应力 摩阻 

分 类 号：TB126[理学—工程力学]