粘性和非线性对船舶用三维扑翼型推进器的影响

G. Papadakis, E. Filippas, D. Ntouras, K. Belibassakis
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引用次数: 8

摘要

本文主要研究了粘性、非线性和三维效应对水下扑翼性能预测的影响。用于数值研究的计算工具包括内部计算流体动力学(CFD)和势流求解器。给出了两种方法在运动参数范围内的数值计算结果,并与其他方法和实验数据进行了比较。本文的分析揭示了粘滞效应、非线性效应和三维效应对扑翼工作的重要性。此外,还对CFD和边界元法进行了比较,突出了每种方法的优点和局限性。该方法可为舰船推进系统的评估、初步设计和控制提供有用的工具。
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Effects of viscosity and nonlinearity on 3D flapping-foil thruster for marine applications
The present work focuses on the influence of viscosity, nonlinearities and 3D effects on the predicted performance of a submerged flapping wing. The computational tools used for the numerical investigation consist of in house computational fluid dynamics (CFD) and potential flow solvers. Numerical calculations obtained by both methods are presented over a range of motion parameters and compared against other methods and experimental data. Our analysis enlightens the importance of viscous, nonlinear and 3D effects to the operation of flapping foils. Additionally, a direct comparison between a CFD and a BEM solver is made highlighting the advantages and limitations of each method. The present methods could serve as useful tools for the assessment, preliminary design and control of the studied system for marine propulsion.
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