论文标题
OPENCFS：用于耦合现场模拟的开源有限元元素软件 - 部分声学
openCFS: Open Source Finite Element Software for Coupled Field Simulation -- Part Acoustics
论文作者
论文摘要
有限元方法提供了有吸引力的方法，用于在传感器和各种物理域（例如电动力学，力学和热力学）的传感器和执行器模拟中产生的耦合场问题的数值解决方案。有了此应用程序的透视图和开放，可访问和快速实现的可能性，OPENCFS于2020年启动。它提供了使用有限元方法实现偏微分方程的开源框架。特别是，声学模块是主动发展的一部分，包括几种关键方法。这些方法包括完美匹配的图层技术，非连接界面公式，拉格朗日基函数，legendre基函数，光谱元件配方，鼻元素类型，基于边缘的元素类型（基于边缘的元素后处理），吸收边界条件，频率依赖于时间限制和时间依赖性的模拟。支持时间依赖性模拟，时间谐波模拟和特征值模拟。实施了几种声学方程的变体，包括有关航空声学的相关源术语和波浪运算符。该软件包包括用于风扇噪声模拟的旋转域和不合格接口。它还包含Python3软件包PYCFS的API。本文介绍了OpenCF，重点是声学模块。
The finite element method offers attractive methods for the numerical solution of coupled field problems arising in sensors and actuator simulations of various physical domains, like electrodynamics, mechanics, and thermodynamics. With this application perspective and being open, accessible, and fast implementations are possible, openCFS was launched in 2020. It provides an open-source framework for implementing partial differential equations using the finite element method. In particular, the acoustic module is part of active development, including several key methods. These methods include the perfectly-matched layer technique, non-confirming interface formulations, Lagrangian basis function, Legendre basis functions, spectral element formulations, a nodal element type, edge-based element type (aeroacoustic post-processing), absorbing boundary conditions, frequency dependent-material for time-harmonic and time-dependent simulations. Time-dependent simulations, time-harmonic simulations, and eigenvalue simulations are supported. Several variants of acoustic equations are implemented, including the relevant source terms and wave operators for aeroacoustics. The package includes rotating domains and non-conforming interfaces for fan noise simulations. It also contains an API to the Python3 package pyCFS. This paper presents openCFS with a focus on the acoustic module.
