基于阻抗边界条件的低速吸声风扇晶格玻尔兹曼模拟

IF 4.3 2区 工程技术 Q1 ACOUSTICS
Atsushi Imada , Kazuya Kusano , Kenichi Sakoda , Kisho Hatakenaka , Masato Furukawa
{"title":"基于阻抗边界条件的低速吸声风扇晶格玻尔兹曼模拟","authors":"Atsushi Imada ,&nbsp;Kazuya Kusano ,&nbsp;Kenichi Sakoda ,&nbsp;Kisho Hatakenaka ,&nbsp;Masato Furukawa","doi":"10.1016/j.jsv.2025.119066","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigated the feasibility of using impedance-based modeling in the lattice Boltzmann method (LBM) to simulate the flow and acoustic fields around low-speed fans equipped with sound absorbers. A boundary condition based on the bounce-back method was employed to integrate the impedance model into the LBM simulations, enabling easy application to complex geometries. Initially, the impedance boundary condition based on the bounce-back method was validated using the NASA Langley impedance tube. The simulation results demonstrated good agreement with both the experimental data and conventional LBM simulations, confirming the effectiveness of the bounce-back method for implementing the impedance boundary condition. Subsequently, this method was applied to aeroacoustic simulations of a cross-flow fan equipped with resonators and glass wool. The resonance frequencies of the resonators were tuned to match the blade-passing frequency of the fan, and the impedance characteristics of the sound absorbers were measured using an acoustic impedance tube. The results revealed that overfitting the impedance model to the low-frequency characteristics generated unphysical vortices at the boundaries. In contrast, proper fitting successfully simulated the sound absorption effects of the resonators and glass wool in the aeroacoustic simulations of the cross-flow fan.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119066"},"PeriodicalIF":4.3000,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Lattice Boltzmann simulation of low-speed fans with sound absorbers using impedance boundary condition\",\"authors\":\"Atsushi Imada ,&nbsp;Kazuya Kusano ,&nbsp;Kenichi Sakoda ,&nbsp;Kisho Hatakenaka ,&nbsp;Masato Furukawa\",\"doi\":\"10.1016/j.jsv.2025.119066\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigated the feasibility of using impedance-based modeling in the lattice Boltzmann method (LBM) to simulate the flow and acoustic fields around low-speed fans equipped with sound absorbers. A boundary condition based on the bounce-back method was employed to integrate the impedance model into the LBM simulations, enabling easy application to complex geometries. Initially, the impedance boundary condition based on the bounce-back method was validated using the NASA Langley impedance tube. The simulation results demonstrated good agreement with both the experimental data and conventional LBM simulations, confirming the effectiveness of the bounce-back method for implementing the impedance boundary condition. Subsequently, this method was applied to aeroacoustic simulations of a cross-flow fan equipped with resonators and glass wool. The resonance frequencies of the resonators were tuned to match the blade-passing frequency of the fan, and the impedance characteristics of the sound absorbers were measured using an acoustic impedance tube. The results revealed that overfitting the impedance model to the low-frequency characteristics generated unphysical vortices at the boundaries. In contrast, proper fitting successfully simulated the sound absorption effects of the resonators and glass wool in the aeroacoustic simulations of the cross-flow fan.</div></div>\",\"PeriodicalId\":17233,\"journal\":{\"name\":\"Journal of Sound and Vibration\",\"volume\":\"608 \",\"pages\":\"Article 119066\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2025-03-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sound and Vibration\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022460X25001403\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ACOUSTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sound and Vibration","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022460X25001403","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ACOUSTICS","Score":null,"Total":0}
引用次数: 0

摘要

本文研究了栅格玻尔兹曼方法(LBM)中基于阻抗的建模方法对低速风扇吸声流场和声场进行模拟的可行性。采用基于回弹法的边界条件将阻抗模型集成到LBM仿真中,使其易于应用于复杂几何形状。首先,利用NASA兰利阻抗管验证了基于反弹法的阻抗边界条件。仿真结果与实验数据和常规LBM仿真结果吻合较好,验证了弹跳法实现阻抗边界条件的有效性。随后,将该方法应用于装有谐振器和玻璃棉的横流风扇的气动声学模拟。利用声阻抗管测量了吸声器的阻抗特性,并将吸声器的谐振频率调整为与风机叶片通过频率相匹配。结果表明,阻抗模型对低频特性的过度拟合会在边界处产生非物理涡。在横流风机气动声学仿真中,通过适当的拟合,成功地模拟了谐振器和玻璃棉的吸声效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lattice Boltzmann simulation of low-speed fans with sound absorbers using impedance boundary condition
This study investigated the feasibility of using impedance-based modeling in the lattice Boltzmann method (LBM) to simulate the flow and acoustic fields around low-speed fans equipped with sound absorbers. A boundary condition based on the bounce-back method was employed to integrate the impedance model into the LBM simulations, enabling easy application to complex geometries. Initially, the impedance boundary condition based on the bounce-back method was validated using the NASA Langley impedance tube. The simulation results demonstrated good agreement with both the experimental data and conventional LBM simulations, confirming the effectiveness of the bounce-back method for implementing the impedance boundary condition. Subsequently, this method was applied to aeroacoustic simulations of a cross-flow fan equipped with resonators and glass wool. The resonance frequencies of the resonators were tuned to match the blade-passing frequency of the fan, and the impedance characteristics of the sound absorbers were measured using an acoustic impedance tube. The results revealed that overfitting the impedance model to the low-frequency characteristics generated unphysical vortices at the boundaries. In contrast, proper fitting successfully simulated the sound absorption effects of the resonators and glass wool in the aeroacoustic simulations of the cross-flow fan.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Sound and Vibration
Journal of Sound and Vibration 工程技术-工程:机械
CiteScore
9.10
自引率
10.60%
发文量
551
审稿时长
69 days
期刊介绍: The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信