Aeroacoustic simulation of a cross-flow fan using lattice Boltzmann method with a RANS model

Kazuya Kusano, Masato Furukawa, Kenichi Sakoda, Tomoya Fukui

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

In this study, we developed an unsteady RANS approach based on the lattice Boltzmann method (LBM) to perform direct aeroacoustic simulations of low-speed fans at a lower computational cost compared with the conventional LBM-LES approach. In this method, the k-ω turbulence model is incorporated into the LBM flow solver, and the transport equations of k and ω are computed using the LBM, similar to the Navier-Stokes equations. In addition, moving boundaries, such as fan rotors, are considered using a direct-forcing immersed boundary method. This numerical method was validated through a two-dimensional simulation of a cross-flow fan. The simulation was able to capture an eccentric vortex structure in the rotor, and a pressure rise due to the work of the rotor could be reproduced. In addition, the peak sound of the blade-passing frequency was successfully predicted by the present method. Furthermore, the simulation results showed that the peak sound is generated by the interaction between the rotor blade and the flow around the tongue part of the casing.

本文言語英語
ホスト出版物のタイトルProceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering
編集者Tyler Dare, Stuart Bolton, Patricia Davies, Yutong Xue, Gordon Ebbitt
出版社The Institute of Noise Control Engineering of the USA, Inc.
ISBN(電子版)9781732598652
DOI
出版ステータス出版済み - 2021
イベント50th International Congress and Exposition of Noise Control Engineering, INTER-NOISE 2021 - Washington, 米国
継続期間: 8 1 20218 5 2021

出版物シリーズ

名前Proceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering

会議

会議50th International Congress and Exposition of Noise Control Engineering, INTER-NOISE 2021
国/地域米国
CityWashington
Period8/1/218/5/21

All Science Journal Classification (ASJC) codes

  • 音響学および超音波学

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