Numerical Simulation of the Flow Around a Wall-Mounted
Cylinder in General Orthogonal Coordinates
Investigators: Stuart S. Ochs, R. G. Rajagopalan
Sponsored by : AEEM Dept. @ ISU, Sandia National Laboratories
Summary
In the numerical solution of a system of
partial differential equations, there is a need for
the accurate representation of boundary conditions.
This representation can be accomplished when the
boundary is coincident with some coordinate line.
The numerical solution of the Navier--Stokes equations in
a three--dimensional, general orthogonal coordinate system
was used to analyze the flow around a wall--mounted cylinder.
The governing equations were discretized and
solved by the method known as the SIMPLER algorithm.
Figure 1: Cylinder/flat plate juncture configuration.
The flow field around a circular cylinder extending from
a flat plate is a complex configuration which includes
separation and reattachment points and a horseshoe vortex.
The cylinder/flat plate juncture configuration is shown
in Figure 1. Figure 2 shows a section of the grid in the
x-y plane. Streamline contours in the plane of symmetry
are shown in Figure 3, which also indicates the location
of the separation and reattachment points and the horseshoe
vortex.
Figure 2: Grid section in the z-y plane.
Figure 3: Streamline contours in the plane of symmetry.