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Numerical and experimental study of the motion of a sphere in a communicating vessel system subject to sloshing

机译:通信血管系统中的球体运动的数值和实验研究晃动晃动

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摘要

The purpose of this work is twofold: to present a computational strategy to simulate the dynamics of a rigid sphere during water sloshing and to validate the model with original experimental data. The numerical solution is obtained through the coupling between a two-fluid Navier-Stokes solver and a rigid solid dynamics solver, based on a Newton scheme. A settling sphere case reported in the literature is first analyzed to validate the numerical strategy by ascertaining the settling velocity. In addition, an experiment is carried out based on a sphere submerged into a communicating vessel subjected to sloshing. Experimental data are captured using image processing and statistically treated to provide sphere dynamics quantitative information. The effects of different classical models used to describe drag coefficients, added mass, and wall effects are considered in the study to evaluate their influence on the results. The numerical model provides results that are consistent with the physical data, and the trajectory analysis shows good agreement between the simulations and the experiments. Published under license by AIP Publishing.
机译:这个工作的目的是双重的:水晃动期间呈现,以模拟一个刚性球的动力学的计算策略,并验证与原始实验数据模型。数值溶液通过双流体纳维 - 斯托克斯解算器和一个硬质固体动力学解算器之间的耦合而获得的基础上,牛顿方案。在文献中报道的沉降球壳首先分析来验证通过确定沉降速度数值策略。另外,实验是基于浸没到经受晃动连通容器的球体进行。实验数据使用图像处理和统计处理,以提供球动力学的定量信息捕获。用来形容阻力系数不同的经典款,附加质量和壁效应的影响在研究中被认为是评估其对结果的影响。数值模型提供的结果与物理数据一致,以及模拟和实验之间的轨迹分析显示出良好的协议。通过AIP发布在许可证下发布。

著录项

  • 来源
    《Physics of fluids》 |2019年第8期|共13页
  • 作者单位

    Univ Nacl Litoral CONICET Predio CONICET Santa Fe Ctr Invest Metodos Computac CIMEC Colectora Ruta Nac 168 Km 472 Paraje El Pozo Santa Fe Argentina;

    Univ Nacl Litoral CONICET Predio CONICET Santa Fe Ctr Invest Metodos Computac CIMEC Colectora Ruta Nac 168 Km 472 Paraje El Pozo Santa Fe Argentina;

    Univ Nacl Litoral CONICET Predio CONICET Santa Fe Ctr Invest Metodos Computac CIMEC Colectora Ruta Nac 168 Km 472 Paraje El Pozo Santa Fe Argentina;

    Univ Santiago Chile Dept Ingn Mecan Ave Bernardo OHiggins 3363 Santiago Chile;

    Univ Santiago Chile Dept Ingn Mecan Ave Bernardo OHiggins 3363 Santiago Chile;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 流体力学;
  • 关键词

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