幂律流体在内管做行星运动的环空中流动的速度分布  

Velocity distribution of the flow of power-law fluid in annulus with inner cylinder executing a planetary motion

作　　者：蔡萌[1] 季海军[2] 裴晓含[3] 李志文[4] 崔海清[1] 

机构地区：[1]大庆石油学院提高油气采收率教育部重点实验室,黑龙江大庆163318 [2]大庆石油管理局,黑龙江大庆163453 [3]大庆油田有限责任公司采油工程研究院,黑龙江大庆163453 [4]大庆石油管理局钻探工程公司钻井二公司,黑龙江大庆163413

出　　处：《大庆石油学院学报》2008年第3期12-17,133-134,共6页Journal of Daqing Petroleum Institute

基　　金：国家自然科学基金项目(50374018)

摘　　要：给出了运动双极坐标系下幂律流体在内管做行星运动的环空中流动的切向速度、径向速度、轴向速度及合速度的数学表达式及数值计算方法;并以可视为幂律流体的CMC水溶液为例,对该流动的切向速度、径向速度、轴向速度以及合速度分布进行了数值计算.结果表明:在环空宽间隙和窄间隙处,该流动的径向速度均为零,而切向速度、轴向速度以及合速度分布与内管公转速度、自转速度、环空偏心度以及压力梯度有关.The mathematical expressions and the numerical calculation methods of tangential velocity, radial velocity, axial velocity and resultant velocity of the flow of power-law fluid in annulus with the inner cylinder executing a planetary motion under the moving bipolar coordinate system were given, taking CMC aqueous solution which can be regarded as power-law fluid for an example, the distributions of tangential velocity, radial velocity, axial velocity and resultant velocity of this flow were numerically calculated. The results show that at the wide and narrow clearance, the magnitude of radial velocity are both zero, the distributions of the tangential velocity, axial velocity and resultant velocity are related to the revolution velocity and the rotation velocity of the inner cylinder, the eccentricity and pressure gradient of annulus.

关 键 词：幂律流体 行星运动 环空 切向速度 径向速度 轴向速度 合速度 

分 类 号：TE242[石油与天然气工程—油气井工程]