Abstract: The present study deals with unsteady laminar fluid
transport phenomena around a pair of diamond-shaped cylinders in tandem
arrangement. The Navier-Stokes equations are discretized using finite difference
methods to determine the time history of velocity vector distribution in the
flow field. Emphasis is placed on the effects of the Reynolds number, and the ratio of cylinder
separation distance to length of diamond-shaped cylinder, on the flow patterns. The study
discloses that (i) the generation of von Karman vortex streets behind the
diamond-shaped cylinders are intensified with an increase in the Reynolds
number, (ii) the flow pattern in the wake region of the diamond-shaped islands
is affected by (iii) the corresponding flow map is
obtained in the form of the Reynolds number versus and (iv) the vortex shedding
frequency depends slightly on the gap spacing.
Keywords and phrases: tandem diamond-shaped cylinders, numerical simulation, Reynolds number, vortex motion, gap spacing.
