摘要
建立给定流量条件下变系数二阶流体在内管做轴向往复运动的偏心环空中非定常流的瞬时压力梯度方程,给出这种流动的时均压力梯度公式及相应的数值计算方法;以HPAM水溶液为例,对其在内管做轴向往复运动的偏心环空中非定常流的时均压力梯度进行数值计算和室内试验。结果表明:环空偏心度对时均压力梯度有明显影响,内管冲程和冲次对时均压力梯度的影响不明显;试验验证了时均压力梯度公式及相应数值计算方法的正确性。
An equation of instantaneous pressure gradient for the unsteady flow of the second-order fluid with variable coefficients in eccentric annulus with the inner cylinder reciprocating axially under the precondition of a known flow rate was established.And a formula of time average pressure gradient and correspondent numerical method were presented.Using the HPAM aqueous solution,the time average pressure gradients of the unsteady flow of the fluid in eccentric annulus with the inner cylinder reciprocating axially were numerically calculated,and the correspondent experiments were carried out.The results show that the influence of the annulus eccentricity on the time average pressure gradient is obvious,while the influences of the stroke and the stroke-frequency of the inner cylinder on the time average pressure gradient are not obvious.The correctness of the formula of time average pressure gradient and the correspondent numerical method was tested and verified through experimental results.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第1期61-64,共4页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家自然科学基金项目(50674019)
黑龙江省自然科学基金项目(A200501)
关键词
变系数二阶流体
偏心环空
轴向往复运动
非定常流
压力梯度
second-order fluid with variable coefficients
eccentric annulus
reciprocating axially
unsteady flow
pressure gradient
