| 1 | Interaction between compressibility and particulate suspension on peristaltically driven flow in planar channel显示文摘The peristaltic pumping of a viscous compressible liquid mixed with rigid spherical particles of the same size in a channel is theoretically investigated.The momentum equations for the compressible flow are solved with a perturbation analysis.The analysis is carried out by duly accounting for the nonlinear convective acceleration terms for the fluid part on the wavy wall.The zeroth-order terms yield the Poiseuille flow,and the first-order terms give the Orr-Sommerfeld equation.The explicit expression for the net axial velocity is derived.The effects of the embedded parameters on the axial fluid velocity are studied through different engineering applications.The features of the flow characteristics are analyzed and discussed in detail.The obtained results are evaluated for various parameters associated with the blood flow in the blood vessels with diameters less than 5 500 μm,whereas the particle diameter has been taken to be 8 μm.This study provides a scope to evaluate the effect of the theory of two-phase flow characteristics with compressible fluid problems,and is helpful for understanding the role of engineering applications of pumping solid-fluid mixture by peristaltically driven motion. | I.M.ELDESOKY S.I.ABDELSALAM R.M.ABUMANDOUR M.H.KAMEL K.VAFAI | 2017 | Applied Mathematics and Mechanics(English Edition)2017，38，1： | 1 |
| 2 | 在纯砂岩地层中根据声波测井资料综合Wyllie-Clemenceau方程估算孔隙度显示文摘本文介绍一个用于确定纯地层中声波孔隙度的方程,它将声波旅行时间与骨架和流体时间联系起来。将著名的Wyllie时间平均方程[地球物理学21(1956)]与声地层因素Raiga-Clemenceau方程[测井分析家(1-2,1988)]在客观条件下相乘即可得出本文将要介绍的方程。采用代表不同岩性的大量岩样对该方程进行检验,其结果比较令人满意,而且与实际测量相当接近,误差都在可接受的范围内。除岩心测量外,而且不存在其他的孔隙度测量工具时,我们所推荐的方程就可以被看作为一个很好的孔隙度预测模型,至少在本文所研究的区块内是适用的。与另一个方程(Wyllie-Clemenceau方程)相比较,该方程更为可靠、更便利,这是由于它将影响孔隙度的大部分参数都一致地结合到一起,提高了估算这些参数的精度。同时,方程还给出了合理的岩石传播时间,即40us/ft和120us/ft之间。超出这个范围后,方程是否适用还存在疑问。文中还就我们推荐的方程成功地应用于埃及的Suez Basin海湾的现场实际资料作了阐述。 | M.H.Kamel 曹鉴华 陈科贵 | 2003 | 国外测井技术2003，18，2： | 0 |
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