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平行板间边界层流体速度计算及差异分析 被引量:6
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作者 常青林 《中国海上油气》 CAS CSCD 北大核心 2014年第1期109-113,共5页
利用粘性流体相关理论并结合施利希廷平行管道边界层研究成果,推导出了水平放置的平板间边界层流体速度计算公式。在一定假设条件下利用斯托克斯定律对该公式进行了验算,并对差异产生原因进行了定性分析。结果表明,考虑边界层条件时流... 利用粘性流体相关理论并结合施利希廷平行管道边界层研究成果,推导出了水平放置的平板间边界层流体速度计算公式。在一定假设条件下利用斯托克斯定律对该公式进行了验算,并对差异产生原因进行了定性分析。结果表明,考虑边界层条件时流体速度分布规律与理想流体明显不同,考虑边界层条件时油滴的实际运移距离比理想状态计算出的运移距离长5%~7%,对除油效果有一定影响。因此在斜板除油器设计中应充分考虑这种情况的影响。 展开更多
关键词 平行板 边界层流体速度 边界层厚度 差异分析
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Mixed Convective Viscoelastic Nanofluid Flow Past a Porous Media with Soret–Dufour Effects 被引量:1
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作者 M.Ramzan Farhan Yousaf +1 位作者 M.Farooq Jae Dong Chung 《Communications in Theoretical Physics》 SCIE CAS CSCD 2016年第7期133-142,共10页
The present study is carried out to see the thermal-diffusion(Dufour) and diffusion-thermo(Soret) effects on the mixed convection boundary layer flow of viscoelastic nanofluid flow over a vertical stretching surface i... The present study is carried out to see the thermal-diffusion(Dufour) and diffusion-thermo(Soret) effects on the mixed convection boundary layer flow of viscoelastic nanofluid flow over a vertical stretching surface in a porous medium. Optimal homotopy analysis method(OHAM) is best candidate to handle highly nonlinear system of differential equations obtained from boundary layer partial differential equations via appropriate transformations. Graphical illustrations depicting different physical arising parameters against velocity, temperature and concentration distributions with required discussion have also been added. Numerically calculated values of skin friction coefficient, local Nusselt and Sherwood numbers are given in the form of table and well argued. It is found that nanofluid velocity increases with increase in mixed convective and viscoelastic parameters but it decreases with the increasing values of porosity parameter. Also, it is observed that Dufour number has opposite behavior on temperature and concentration profiles. 展开更多
关键词 mixed convection porous media nanofluid flow soret-dufour effects
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