The corresponding laminar problem has been theoretically analyzed by Schlichting3 in 1933. Neither of these solutions, however, holds for finite opening, i.e. at a short distance from the opening. Kuethe,3 in 1935, extended Tollmien's results to the case of a two-dimensional jet issuing into a medium not at rest and also worked out an approximate method for'the computation of the velocity profi...

The purpose of this paper is to investigate the linear stability analysis for laminar-turbulent transition region high-Reynolds-number instabilities boundary layer flow on a rotating disk. This investigation considers axial along surface-normal direction, by studying analytical expressions steady solution, laminar, incompressible and inviscid fluid due disk in presence uniform injection suction...

The paper presents accurate numerical solutions of the full two-dimensional governing equations for steady and unsteady laminar/laminar internal condensing flows. The results relate to issues of better design and integration of condenser-sections in thermal management systems (looped heat pipes, etc.). The flow geometry, in normal or zero gravity, is chosen to be the inside of a channel with fi...

In vortex motion fluid moves in curve path and the stream lines are curved. When the fluid flows between curved stream line, the centrifugal forces are setup which is counter balanced by pressure forces acting in the radial direction. The vortex motion has two types of curved motion. The first type called free vortex type, the fluid moves due to its own natural effect but energy is not added to...

The incompressible boundary layer in the axial flow past a cylinder has been shown Tutty et. al.([11]) to be stabler than a two-dimensional boundary layer, with the helical mode being the least stable. In this paper the secondary instability of this flow is studied. The laminar flow is shown here to be always stable at high transverse curvatures to secondary disturbances, which, together with a...

Numerical solutions of 2-D steady incompressible flow inside a triangular cavity are presented. For the purpose of comparing our results with several different triangular cavity studies with different triangle geometries, a general triangle mapped onto a computational domain is considered. The Navier-Stokes equations in general curvilinear coordinates in streamfunction and vorticity formulation...

A volume-penalizing immersed boundary method is presented that facilitates the computation of incompressible fluid flow in complex flow domains. We apply this method to simulate the flow in cerebral aneurysms, and focus on the accuracy with which the flow field and the corresponding shear stress field are computed. The method is applied to laminar, incompressible flow in curved cylindrical vess...

Direct numerical simulations (DNS) are carried out to study the laminar stability properties of an effusioncooled adiabatic flat-plate boundary layer at Mach 6. Through four aligned rows of holes, cold gas is blown into the boundary layer at the wall and background disturbances are excited at the wall upstream of the holes. Two cases are compared, with small and large spanwise spacing of the ho...

Laminar-turbulent transition in swept-wing boundary layers is typically caused by secondary instabilities of steady crossflow vortices (CFVs). So far, suction for laminar flow control (LFC) in three-dimensional boundary layers has been applied to reduce the crossflow and thus the growth of the primary CFV modes to CFVs. We investigate the influence of strong, localized suction (pinpoint suction...