首页> 美国卫生研究院文献>other >An Absorbing Boundary Condition for the Lattice Boltzmann Method Based on the Perfectly Matched Layer
【2h】

An Absorbing Boundary Condition for the Lattice Boltzmann Method Based on the Perfectly Matched Layer

机译:基于完全匹​​配的层的晶格Boltzmann方法的吸收边界条件

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The Lattice Boltzmann Method (LBM) is a well established computational tool for fluid flow simulations. This method has been recently utilized for low Mach number computational aeroacoustics. Robust and nonreflective boundary conditions, similar to those used in Navier-Stokes solvers, are needed for LBM-based aeroacoustics simulations. The goal of the present study was to develop an absorbing boundary condition based on the perfectly matched layer (PML) concept for LBM. The derivation of formulations for both two and three dimensional problems are presented. The macroscopic behavior of the new formulation is discussed. The new formulation was tested using benchmark acoustic problems. The perfectly matched layer concept appears to be very well suited for LBM, and yielded very low acoustic reflection factor.
机译:格子玻尔兹曼法(LBM)是用于流体流动模拟的成熟的计算工具。该方法最近已用于低马赫数的计算航空声学。基于LBM的航空声学仿真需要类似于Navier-Stokes求解器的稳固且非反射性的边界条件。本研究的目标是基于LBM的完全匹配层(PML)概念开发吸收边界条件。提出了针对二维和三维问题的公式的推导。讨论了新配方的宏观行为。使用基准声学问题测试了新配方。完美匹配的层概念似乎非常适合LBM,并且产生了非常低的声反射系数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号