# 幂律流体偏心环空螺旋流的内管壁受力分析（崔海清; 樊宇; 裴晓含; 蔡萌）

【作者】崔海清; 樊宇; 裴晓含; 蔡萌 【作者单位】大庆石油学院提高油气采收率教育部重点实验室; 大庆油田采油工程研究

【论文摘要】 给出了双极坐标系中幂律流体偏心环空螺旋流时流体作用在内管外壁上的法向、切向应力分布和扭矩计算公式;以可视为幂律流体的 CMC 水溶液为例,利用幂律流体偏心环空螺旋流的流函数分布数值解对该流动的流体作用在内管壁的法向、切向应力分布和扭矩进行数值计算,并分析了内管自转速度、环空偏心度和压力梯度对其影响;以水为例,把利用本研究数值解绘制的法向、切向应力分布和扭矩曲线和解析解绘制的法向、切向应力分布和扭矩曲线进行了对比,两者吻合得较好,可以说明本研究数值计算幂律流体偏心环空螺旋流的流体作用在内管壁的法向、切向应力分布和扭矩的方法是正确的.

【英文论文摘要】 In this paper,the calculation formulae of normal stress difference,tangential stress and moment acted on the inner cylinder of the helical flow of power-law fluid in eccentric annulus were given,taking CMC water solution which can be regarded as power-law fluid for an example,the distribution of normal stress difference,tangential stress and moment acted on the inner cylinder were numerically calculated using by the results calculated numerically of the helical flow of power-law fluid in eccentric annulus.The influences of the rotation velocity of the inner cylinder and the eccentricity and the pressure gradient of annulus on the normal stress difference,tangential stress and moment acted on the inner cylinder were analyzed.Taking water for an example,the curves of normal stress difference,tangential stress and moment acted on the inner cylinder plotted by numerical results in this paper were compared with them plotted by analysis results,they were coincide well,it showed that the meth...更多ods of normal stress difference,tangential stress and moment acted on the inner cylinder calculated numerically were correct.  还原

【论文关键词】 幂律流体; 偏心环空; 螺旋流; 法向应力; 切向应力; 扭矩
【英文论文关键词】 power-law fluid; eccentric annulus; helical flow; normal stress difference; tangential stress; moment
【基金】国家自然科学基金项目(50374018)

TAG: 崔海清 流体 蔡萌 樊宇 裴晓含
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