流体偏心环空螺旋流动压力梯度的数值计算(王健; 修德艳; 蔡萌)

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*B$LU&k@T/K F0流体偏心环空螺旋流动压力梯度的数值计算

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【作者】王健; 修德艳; 蔡萌 【作者单位】大庆榆树林油田开发有限责任公司; 中国石油冀东油田公司勘探开发研究院; 大庆石油学院提高油气采收率教育部重点实验室水利论文W3W[G"O1FQ`;B

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)bl5|,Y,o0【论文摘要】 本研究利用待定系数法对 Newton 流体偏心环空螺旋流动的运动方程进行了变换,得到了给定流量情况下 Newton 流体偏心环空螺旋流动的压力梯度的计算公式.并以水为例,利用上述压力梯度计算公式,采用有限差分法对该流动的压力梯度进行了数值计算。计算结果表明:压力梯度随着环空偏心度的增大而减小,随着流量的增大而增大。

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x:x.G\'B c0【英文论文摘要】 In this paper,the kinematic equations of flow of Newtonian fluid of helical flow in eccentric annulus were transformed by the method of undetermined coefficient,the calculation formula of pressure gradient of flow of Newtonian fluid of helical flow in eccentric annulus was obtained.Taking water for an example,using the calculation formula of pressure gradient above,the pressure gradient was calculated numerically by the infinite method.The results show that pressure gradient drops with the augment of annulus eccentricity and increases with the augment of the flux.

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【论文关键词】 Newton 流体; 螺旋流动; 偏心环空; 压力梯度; 待定系数法
)bpEQ.K6P~5ZZ0【英文论文关键词】 Newtonian fluid; helical flow; eccentric annulus; pressure gradient; undetermined coefficient method

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TAG: 蔡萌 流体 数值计算 王健 螺旋
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