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| 1 | Electroosmotic Flow of MHD Power Law Al_2O_3-PVC Nanofluid in a Horizontal Channel: Couette-Poiseuille Flow Model显示文摘The current manuscript is reported about the electro-osmotic Couette-Poiseuille flow of power law Al_2O_3-PVC nanofluid through a channel, in which upper wall is moving with constant velocity. The influences of magnetic field, mixed convection, joule heating, and viscous dissipation are also incorporated. The flow is generated because of constant pressure gradient in axial direction. The resulting flow problem is coupled nonlinear ordinary differential equations, which are at first modeled and then transform into dimensionless form through appropriate transformation.Analytical solution of the governing is carried out. The impact of modified Brinkman number, modified Magnetic field,electro-osmotic parameters on velocity and temperature are examined graphically. From the results, it is concluded that the Skin friction at moving isolated wall decreases with the increase of electro-osmotic parameter and reverse behavior for Nusselt number at heated stationary wall occur. | N.Shehzad A.Zeeshan R.Ellahi | 2018 | Communications in Theoretical Physics2018，69，6： | 3 |
| 2 | 含微小颗粒的非牛顿生物Sutterby流体在感应磁场旋转圆盘上的流动性显示文摘本研究的主要目标是研究含有微小颗粒的非牛顿Sutterby流体的流动性,以及微生物回旋运动引起感应磁场的影响。流动设置在一对圆盘之间,圆盘间充满了含有微小颗粒和趋旋微生物的Sutterby流体。在流动控制中考虑了Arrhenius动力学和热辐射的影响。利用相关的相似变换将所建立的数学模型修改为非线性常微分方程。为了计算非线性常微分方程的数值解,使用微分变换程序(DTM)。对于非线性问题,积分变换技术执行难度大。因此,使用基于Taylor展开的微分变换方法以获得多项式解作为解析解。为了提高公式化数学建模的收敛性,将Padé近似与微分变换方法相结合。讨论了不同无量纲因子对速度、温度场、浓度分布和运动回旋微生物剖面的影响,用表格形式对两块板上的扭矩进行计算和显示。 | M.B.ARAIN A.ZEESHAN M.M.BHATTI Mohammed Sh.ALHODALY R.ELLAHI | 2023 | Journal of Central South University2023，30，8： | 1 |
| 3 | 外周层纤毛运动引起的PTT流体流动的热和浓度分析显示文摘本文分析了两层纤毛诱导的Phan-Thien-Tanner (PTT)流体的热效应和浓度效应。采用PhanThien-Tanner流体模型模拟呼吸道黏液。由于呼吸道上皮细胞上存在睫状体周液层(PCL)和气道睫状体层(ACL),因此采用两层模型方法进行模拟。采用长波长和小雷诺数近似简化了两层流动问题的数学模型,所得到的带有移动边界的微分方程给出了两层中速度、温度和浓度分布的精确解。采用速度分布计算了压力的变化,并采用沿通道壁面压力梯度的数值积分计算了压力的上升。利用曲线图说明了物理参数对压力上升、速度、温度和浓度分布的影响。结果表明:流体内层(PCL)的速度和温度分布最大,流体外层(ACL)的浓度分布最大。 | Khadija MAQBOOL Sidra SHAHEEN Elena BOBESCU R.ELLAHI | 2021 | Journal of Central South University2021，28，11： | 1 |
| 4 | 感应磁场和变热导率对二级流体驻点流动的影响显示文摘本文研究变热导率和感应磁场冲击作用下具有线性拉伸特性的二级流体驻点输运问题。通过适当的变换,将非线性粒子微分方程组转化为常微分方程组。用最优同伦分析方法对所得方程进行求解。通过图解研究相关参数对表面摩擦系数、温度、感应磁场、速度和局部努塞尔数的影响。利用MATLAB软件中内置的bvp4c技术对得到的级数解进行收敛和残差处理。结果表明:随着磁场参数的增大,表面摩擦系数也随拉伸比的增大而增大。为验证结果的有效性,我们与文献进行对比,发现本研究与现有文献结果非常一致。 | A.A.KHAN S.ILYAS T.ABBAS R.ELLAHI | 2021 | Journal of Central South University2021，28，11： | 1 |
| 5 | The Blood Flow of Prandtl Fluid Through a Tapered Stenosed Arteries in Permeable Walls with Magnetic Field显示文摘This Communication deals with the blood flow of Prandtl fluid through a tapered stenosed arteries having permeable walls.The governing equations of two-dimensional Prandtl fluid model are modelled in cylindrical coordinates.The highly nonlinear equations are simplified with the help of non-dimensional variables under the assumption of mild stenosis.The solution of reduced nonlinear equation subject to boundary condition of porous walls having the effects of Darcy's number and slip parameter are computed analytically with the help of perturbation method.Effects of emerging parameters such as impedance A,slip parameter a,stenosis height 6,magnetic parameter and stress component Srz on velocity are illustrated graphically.The streamlines have also been presented to discuss the trapping bolus discipline. | R.Ellahi S.U.Rahman S.Nadeem K.Vafai | 2015 | Communications in Theoretical Physics2015，63，3： | 0 |
| 6 | Exact Solutions on MHD Flow Past an Accelerated Porous Plate in a Rotating Frame显示文摘We present an analysis of an electrically conducting viscous fluid over a porous plate in a rotating system.The plate starts impulsively from rest relative to the rotating fluid moving with uniform acceleration in its own plane.Exact solutions are developed for both large and small times.In addition,skin friction is computed.The variations of magnetic field and porosity are displayed and discussed.It is noted that steady state behavior is not achieved even under the simultaneous effects of suction,magnetic field and rotation. | T.Hayat Liaqat Ali.Khan R.Ellahi S.Obaidat | 2011 | Chinese Physics Letters2011，28，5： | 0 |
| 7 | Peristaltic Flow of Couple Stress Fluid in a Non-Uniform Rectangular Duct Having Compliant Walls显示文摘The present study investigates the peristaltic flow of couple stress fluid in a non-uniform rectangular duct with compliant walls.Mathematical modeling is based upon the laws of mass and linear momentum.Analytic solutions are carried out by the eigen function expansion method under long-wavelength and low-Reynolds number approximations.The features of the flow characteristics are analyzed by plotting the graphs of various values of physical parameters of interest.Trapping bolus scheme is also presented through streamlines. | R.Ellahi M.Mubashir Bhatti C.Fetecau K.Vafai | 2016 | Communications in Theoretical Physics2016，65，1： | 0 |
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