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Modelling anguilliform swimming at intermediate Reynolds number: A review and a novel extension of immersed boundary method applications

机译:模拟中等雷诺数下的鳗鱼形游泳:沉浸边界方法应用的回顾和新颖扩展

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摘要

There is a considerable body of research literature addressing questions surrounding the biomechanics, internal hydrodynamics, external fluid dynamics and neuronal control behind anguilliform swimming, or swimming with whole body undulations. This research spans experimental studies and a host of modelling efforts from the very simple to the enormously complex. In this paper we focus on models of anguilliform swimming at intermediate Reynolds number. The challenge inherent in these modelling efforts, is the unavoidable inextri-cability of the three components of the swim-system: neural control, muscle mechanics and fluid dynamics. These components all provide input and feedback one to each other in a nonlinear way. Thus, questions about the kinematics, dynamics or functioning of any part of the swim-system can only be truly answered if the entire swim-system is modeled. This is a formidable task, and so modelling efforts to date have restricted themselves to various aspects of the swim-system. We review current models of anguilliform swimming at intermediate Reynolds number and present a promising new modelling approach using the immersed boundary method. This computational method makes it possible to model the entire swim-system while keeping the computational load within manageable limits.
机译:有大量研究文献都围绕生物力学,内部流体动力学,外部流体动力学和无角形游泳或全身起伏游泳背后的神经元控制问题进行了研究。这项研究涵盖了从简单到极其复杂的实验研究和大量建模工作。在本文中,我们重点研究中间雷诺数下的鳗鱼状游泳模型。这些建模工作固有的挑战是游泳系统的三个组成部分不可避免的不可分割性:神经控制,肌肉力学和流体动力学。这些组件都以非线性方式相互提供输入和反馈。因此,只有对整个游泳系统进行建模,才能真正回答有关游泳系统任何部分的运动学,动力学或功能性问题。这是一项艰巨的任务,因此迄今为止的建模工作已将自己局限于游泳系统​​的各个方面。我们审查当前模型在中等雷诺数的鳗鱼游泳,并提出了一种有前途的使用浸没边界方法的新建模方法。这种计算方法可以对整个游泳系统进行建模,同时将计算负荷保持在可管理的范围内。

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