论文标题
多体系统的流体结构相互作用：方法和应用
Fluid-structure interaction of multi-body systems: Methodology and applications
论文作者
论文摘要
我们提出了一种计算多体系统流体结构相互作用问题的方法。流体流动方程是使用分数方法的求解的，该方法具有Uhlmann提出的浸没边界方法[J. [J.计算物理。 209（2005）448]。使用Felis提出的递归算法来求解刚体的方程。机器人41（2017）495]。方程式两个系统的耦合较弱，因此所得的方法具有成本效益。通过与文献中的二维情况和三维情况进行比较，可以证明该方法的准确性：柔性机翼的拍打，凹陷的柔性板的自我推向以及在自由流中的旗帜拍打。为了说明所提出方法的功能，提出了两个三维生物启发的应用：扩展到陷入困境的柔性板的三个维度和一个简单的蜘蛛气球模型。
We present a method for computing fluid-structure interaction problems for multi-body systems. The fluid flow equations are solved using a fractional-step method with the immersed boundary method proposed by Uhlmann [J. Comput Phys. 209 (2005) 448]. The equations of the rigid bodies are solved using recursive algorithms proposed by Felis [Auton. Robot 41 (2017) 495]. The two systems of equations are weakly coupled so that the resulting method is cost-effective. The accuracy of the method is demonstrated by comparison with two- and three-dimensional cases from the literature: the flapping of a flexible airfoil, the self-propulsion of a plunging flexible plate, and the flapping of a flag in a free stream. As an illustration of the capabilities of the proposed method, two three-dimensional bio-inspired applications are presented: an extension to three dimensions of the plunging flexible plate and a simple model of spider ballooning.
