Reduction of flow-induced noise in a household air purifier
- Title
- Reduction of flow-induced noise in a household air purifier
- Author
- 정진태
- Keywords
- Household air purifier; Flow-induced noise; Tonal noise; Wide-band noise; CFD analysis; Flow separation; Orthogonal array table; Fan laws
- Issue Date
- 2020-08
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- Citation
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v. 34, no. 8, page. 3105-3115
- Abstract
- In this study, we propose a design for a household air purifier that reduces the flow-induced noise caused by the impeller of the fan system. The noise of the air purifier was identified in experiments as induced by the air flow generated by the impeller of the purifier. This noise can be classified into tonal noise and wide-band frequency noise: The former is the noise from the impeller blade turning, and the latter is from air flow turbulence. Using a commercial computational fluid dynamics (CFD) analysis code, it was shown that flow separation occurs at the outlet of the scroll by the adverse pressure gradient, which significantly reduces the flow rate of the purifier. To avoid flow separation and maximize flow rate within the adjustable ranges of the design parameters, an improved air purifier was redesigned using an orthogonal array table. By CFD analysis, the improved design showed an increased flow rate without flow separation. Finally, after fabricating a prototype with the improved design, it was experimentally proven that noise was reduced by 4.2 dBA without sacrificing flow rate.
- URI
- https://link.springer.com/article/10.1007%2Fs12206-020-0701-7https://repository.hanyang.ac.kr/handle/20.500.11754/164745
- ISSN
- 1976-3824; 1738-494X
- DOI
- 10.1007/s12206-020-0701-7
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML