This paper describes the development of a computational framework for aerodynamic simulations based on the unsteady vortex lattice method under the object-oriented programming paradigm. The effort aims to fulfill the fluid-dynamics portion of the fluid–structure interaction problem in the multiphysics field. The construction and implementation of an object-oriented model is introduced along with its analysis and design stages, focusing on the generality and versatility. The overall class organization is presented, and the main classes’ characteristics are discussed. The software validation indicates that the transient and the steady-state aerodynamics for the impulsively started motion of a body are accurately captured by the simulations. In addition, comparisons against experimental results show that rotors in hover flight are acceptably represented for small angles of attack of the blades, within the limitations of the flat-plate representation and the inviscid hypothesis of the model. Regarding applications, six different models are analyzed: 1) a single propeller rotor, 2) a small-scale quadcopter drone, 3) a flying-wing drone, 4) a joined-wing aircraft, 5) a drag-reduction system for cars, and, 6) a flapping-wing insect. In all cases, the results indicate that a well-tuned simulation based on vorticity-dominated flows is widely suitable for the aerodynamic study of several cases. All simulations expose the main advantages of a modular object-oriented program: the ability to change the case of analysis with minimal reprogramming, and the flexibility to link with different models in a co-simulation strategy.

本文介绍了面向对象编程范式下基于非定常涡流格子方法的空气动力学模拟计算框架的开发。这项工作旨在解决多物理场中流固耦合问题的流动力学部分。介绍了面向对象模型的构建和实现以及其分析和设计阶段，重点是通用性和多功能性。介绍了整个班级的组织方式，并讨论了主要班级的特点。软件验证表明，通过模拟可以准确地捕捉到人体冲动开始运动的瞬态和稳态空气动力学特性。此外，与实验结果的比较表明，在平板表示和模型无形假设的限制范围内，对于小角度的叶片攻角，可以较好地表示旋翼飞行中的转子。在应用方面，分析了六种不同的模型：1）单螺旋桨转子，2）小型四旋翼无人机，3）飞翼无人机，4）联翼飞机，5）汽车减阻系统和6）拍打翅膀的昆虫。在所有情况下，结果都表明，基于涡度主导的流动进行良好的模拟非常适合于几种情况的空气动力学研究。所有模拟都展示了模块化面向对象程序的主要优点：能够以最少的重新编程来更改分析案例的功能，