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首页> 外文期刊>Research journal of science and technology >Numerical Investigations on Rotatry Micropolar Fluid in Hydromagnetics Permeated with Suspended Particles Saturating Porous Medium
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Numerical Investigations on Rotatry Micropolar Fluid in Hydromagnetics Permeated with Suspended Particles Saturating Porous Medium

机译：悬浮颗粒饱和多孔介质渗透旋转粒子旋转微极流体的数值研究

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This paper deals with the convection of micropolar fluids heated and soluted from below in the presence of suspended particles (fine dust) and uniform vertical rotation Ω(0,0,Ω) and uniform vertical magnetic field H(0,0,H) in a porous medium. Using the Boussinesq approximation, the linearized stability theory and normal mode analysis, the exact solutions are obtained for the case of two free boundaries. It is found that the presence of the suspended particles number density, the rotation parameter, stable solute, magnetic field intensity and medium permeability bring oscillatory modes which were non-existent in their absence. It is found that the presence of coupling between thermal and micropolar effects, rotation parameter, solute parameter and suspended particles may introduce overstability in the system. Graphs have been plotted by giving numerical values to the parameters accounting for rotation parameter Ω(0,0,Ω), magnetic field H(0,0,H) solute parameter, the dynamic microrotation viscosity κ and coefficient of angular viscosity γ′ to depict the stability characteristics, for both the cases of stationary convection and overstability. It is found that Rayleigh number for the case of overstability and stationary convection increases with increase in rotation parameter, as well as with magnetic field intensity, solute parameter and decreases with increase in micropolar coefficients and medium permeability, for a fixed wave number, implying thereby the stabilizing effect of rotation parameter, magnetic field intensity ,solute parameter and destabilizing effect of micropolar coefficients and medium permeability on the thermosolutal convection of micropolar fluids.
机译：本文涉及在悬浮颗粒（细粉尘）和均匀的垂直旋转ω（0,0，H）的垂直旋转和均匀的垂直磁场H（0,0，H）的情况下从下面加热和沉淀的微柱液的对流。多孔介质。使用BoussinesQ近似，线性化稳定性理论和正常模式分析，为两个自由边界的情况获得了精确的解决方案。结果发现，存在悬浮颗粒数密度，旋转参数，稳定溶质，磁场强度和中渗透性引起振荡模式，其在不存在中不存在。发现热和微基波效应，旋转参数，溶质参数和悬浮颗粒之间的偶联的存在可能在系统中引入倍数。通过向旋转参数ω（0,0，ω），磁场H（0,0，H）溶质参数，动态微液粘度κ和角度粘度系数的参数来绘制图表。描绘稳定性特性，静止对流和倍数的情况。结果发现，由于旋转参数的增加，以及磁场强度，溶质参数和随着微基波系数和中透渗透率的增加而增加，摩尔速度和静止对流的情况下增加了ryleigh号，并且随着微多波动系数和中透渗透率而减小，迫切然暗示微柱系数旋转参数，磁场强度，溶质参数及稳定性效应对微柱液热致血压对流的稳定作用。

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