采用任意-拉格朗日-欧勒方法进行三维流固耦合模拟,并将其应用于飞行物体

IF 8.7 2区 工程技术 Q1 Mathematics
Daniele Di Cristofaro, Attilio Frangi, Massimiliano Cremonesi
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引用次数: 0

摘要

空气与结构的相互作用是微型飞行器设计过程中需要考虑的一个关键方面。在这种情况下,建模和数值模拟是分析空气动力性能的有力工具。本研究提出了一种先进的流固耦合数值模拟技术,用于模拟蜻蜓机翼,由于蜻蜓机翼复杂的拍打运动学,蜻蜓机翼被认为是最有趣的模型之一。流体子问题由不可压缩纳维-斯托克斯方程描述,在有限元任意-拉格朗日-欧拉框架内求解,而固体子问题则使用结构有限元(如膜和梁)解决。此外,还采用了一种基于连接操作和细化程序的新型重网格算法,以减少流体网格中的元素变形,从而提高流体求解的精度。首先,研究了单个后翼的变形。其次,通过加入前翼和简化的胸部几何形状,丰富了蜻蜓模型。初步结果凸显了身体周围流体的复杂动态以及所建议的网格生成算法的效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

3d fluid–structure interaction simulation with an Arbitrary–Lagrangian–Eulerian approach with applications to flying objects

3d fluid–structure interaction simulation with an Arbitrary–Lagrangian–Eulerian approach with applications to flying objects

Air-structure interaction is a key aspect to account for during the design of Micro Air Vehicles. In this context, modelisation and numerical simulations represent a powerful tool to analyse aerodynamic performances. This work proposes an advanced fluid–structure interaction numerical technique for the simulation of dragonfly wings, considered one of the most interesting model due to their complex flapping kinematic. The fluid subproblem, described by incompressible Navier–Stokes equations, is solved in a Finite Element Arbitrary-Lagrangian-Eulerian framework, while the solid subproblem is addressed using structural Finite Element, such as membranes and beams. Moreover, a novel remeshing algorithm based on connectivity manipulation and refinement procedure has been implemented to reduce element distortion in fluid mesh, thus increasing the accuracy of the fluid solution. Firstly, the deformation of a single hindwing has been studied. Secondly, the dragonfly model is enriched by incorporating the forewing and a simplified thorax geometry. Preliminary results highlight the complex dynamic of the fluid around the body as well as the efficiency of the proposed mesh generation algorithm.

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来源期刊
Engineering with Computers
Engineering with Computers 工程技术-工程:机械
CiteScore
16.50
自引率
2.30%
发文量
203
审稿时长
9 months
期刊介绍: Engineering with Computers is an international journal dedicated to simulation-based engineering. It features original papers and comprehensive reviews on technologies supporting simulation-based engineering, along with demonstrations of operational simulation-based engineering systems. The journal covers various technical areas such as adaptive simulation techniques, engineering databases, CAD geometry integration, mesh generation, parallel simulation methods, simulation frameworks, user interface technologies, and visualization techniques. It also encompasses a wide range of application areas where engineering technologies are applied, spanning from automotive industry applications to medical device design.
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