In this paper, a two-dimensional (2D) numerical simulation has been performed for an
unsteady magnetohydrodynamics (MHD) flow around a solid square cylinder placed in a
channel. Computational simulations were done for the ranges of Reynolds and Stuart
numbers of 1–250 and 0–10, respectively. Finite volume method (FVM) has been used to
solve the unsteady Navier–Stokes equations. The effects of streamwise magnetic field on
the flow separation and suppress of the vortex shedding are studied in detail for the above …

The study of the flow approaching obstacles in a channel has a wide variety of engineering
applications such as off-shore marine structures, heat exchangers, skyscrapers, chimney
stacks, etc.,[1]. Another important example is the heat sinks for electronic components, which
are based on arrays of short cylindrical pin-fins placed inside a channel [2]. Having such
important applications, this type of fluid flow has been the subject of intensive studies since
last decade [3–6]. Suzuki and Suzuki [7] studied unsteady flow in a channel obstructed by an …