We consider the flow of two immiscible fluids lying between concentric cylinders when the outer cylinder is fixed and the inner one rotates. The interface is assumed to be concentric with the cylinders, and gravitational effects are neglected. We present a numerical study of the effect of different viscosities, different densities and surface tension on the linear stability of the Couette flow....

In many applications, the heat flux at surface is known instead of temperature. addition, in some like vacuum drying or high altitude flights, pressure below atmospheric pressure, so rarefaction effects become important, and therefore, Navier-Stokes-Fourier equations fail to predict gas thermal behavior. this paper, a constant boundary condition developed implemented frame Shakhov model kinetic...

We study the stability of density stratified flow between corotating vertical cylinders with rotation rates o < i and radius ratio ri/ro = 0.877, where subscripts o and i refer to the outer and inner cylinders. Just as in stellar and planetary accretion disks, the flow has rotation, anticyclonic shear, and a stabilizing density gradient parallel to the rotation axis. The primary instability of ...