Affiliations: Department of Mechanical Engineering, Saitama University, Sakura-ku, Saitama, Japan
Correspondence:
[*]
Corresponding author: Shahajada Mahmudul Hasan, Department of Mechanical Engineering, Saitama University, Shimo-Okubo 255, Sakura-ku, Saitama 338-8570, Japan. E-mail:s13dh052@mail.saitama-u.ac.jp
Abstract: A wind tunnel system for a spinning body has been
designed for the measurement of the hydrodynamic forces acting on the body.
The body was successfully suspended and rotated by electromagnets. This
existing arrangement is required to be enlarged to observe more accurate
hydrodynamic forces acting on the body. Therefore, for the further
development and control, it is important to understand the exact magnetic
flux distribution inside the system as well as the variation of the force
with the increase of the current. In this paper, both 2D symmetric model and
3D model of the arrangement are taken in consideration for the analysis. The
magnetic flux distributions as well as magnetic force acting on the
suspended object are obtained. The magnetic flux densities are analyzed for
the variation of current in electromagnets. Actual force acting on the body
is also measured. It is observed that the experimental results support the
results obtained by numerical analysis.
Keywords: Electromagnetic analysis, magnetic suspension, wind tunnel, spinning body, hydrodynamic force
