Numerical and Experimental Analysis of the Hydrodynamic Performance of a Three-Dimensional Finite-Length Rotating Cylind
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RESEARCH ARTICLE
Numerical and Experimental Analysis of the Hydrodynamic Performance of a Three-Dimensional Finite-Length Rotating Cylinder Wei Wang 1 & Yuwei Wang 1 & Dagang Zhao 1 & Yongjie Pang 1 & Chunyu Guo 1 & Yifan Wang 1 Received: 6 November 2019 / Accepted: 20 April 2020 # The Author(s) 2020
Abstract The hydrodynamic performance of a three-dimensional finite-length rotating cylinder is studied by means of a physical tank and numerical simulation. First, according to the identified influencing factors, a hydrodynamic performance test of the rotating cylinder was carried out in a circulating water tank. In order to explore the changing law of hydrodynamic performance with these factors, a particle image velocimetry device was used to monitor the flow field. Subsequently, a computational field dynamics numerical simulation method was used to simulate the flow field, followed by an analysis of the effects of speed ratio, Reynolds number, and aspect ratio on the flow field. The results show that the lift coefficient and drag coefficient of the cylinder increase first and then decrease with the increase of the rotational speed ratio. The trend of numerical simulation and experimental results is similar. Keywords Rotating cylinder . Magnus . Rotational speed ratio . Aspect ratio . Computational field dynamics . Model test
1 Introduction The hydrodynamic performance of cylinders is a classic and complex problem in fluid mechanics research, and has wide applications in scientific research and engineering (e.g., aerospace research, water conservation, and marine engineering). Due to the physical structure of a cylinder, its flow field and force characteristics are affected by several factors, such as the Reynolds number, surface roughness, cylinder size, and turbulence intensity. In many engineering situations (Sedaghat et al. 2014; Liang et al. 2016; Ommani et al. 2016), the cylinders in a structure must be rotated at a certain rate; hence, Article Highlights • In order to meet the practical application in engineering, it is necessary to study the hydrodynamic performance of rotating cylinder under different conditions. • Both physical experiment and PIV test of the rotating cylinder were carried out in the circulating water channel. • The hydrodynamic performance of a rotating cylinder was simulated under three parameters and compared with the experimental results. * Dagang Zhao [email protected] 1
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
studying the hydrodynamic performance of a rotating cylinder is a critical endeavor. The problem of trajectory deflection caused by rotating cylinders was first discovered and discussed in the seventeenth century. In 1852, the German scientist, Magnus, described this phenomenon in detail, explaining the deflection of a rotating object. Hence, this phenomenon, namely, the Magnus effect, is named after him (Fleming and Probert 1984). Meanwhile, the difference in flow around a rotating cylinder and a smooth cylinder is manif
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