![]() ![]() An approximation is used for the estimation of radial normal stress. Ravanchi, Maryam Takht Mirzazadeh, Mahmoud Rashidi, FariborzĪn approximate analytical solution is derived for the steady state, purely tangential flow of a viscoelastic fluid obeying the Giesekus constitutive equation in a concentric annulus with inner cylinder rotation. International Nuclear Information System (INIS) All in all, it can be concluded that, with the right configuration of the concentrated air flow setup, the rotating cylinder can be used as a lifting device for very short take-off since it can produce very high coefficient of lift (2.5 times higher) compared with steady air flow configuration.įlow of Giesekus viscoelastic fluid in a concentric annulus with inner cylinder rotation Cylinder size of 30mm is chosen and several configurations in steady and concentrated air flows have been evaluated. Computational method is used for this study to analyse the Magnus effect, in which two-dimensional finite element numerical analysis method is applied using ANSYS FLUENT software to examine the coefficients of lift and drag, and to investigate the flow field around the rotating cylinder surface body. Nonetheless, there is still a gap in research to explain the use of spinning cylinder as a good lifting device. With this characteristic, spinning cylinder might be used as a lifting device for short take-off distance aircraft or unmanned aerial vehicle (UAV). Over the years, many studies have demonstrated the feasibility of the Magnus effect on spinning cylinder to improve lift production, which can be much higher than the traditional airfoil shape. Two dimensional numerical analysis of aerodynamic characteristics for rotating cylinder on concentrated air flowĪlias, M.
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