@article{2f6067f501ba472f952ec0b3da8fdd0c,
title = "Noise reduction of an extinguishing nozzle using the response surface method",
abstract = "An inert gas such as nitrogen is used as an extinguishing agent to suppress unexpected fire in places such as computer rooms and server rooms. The gas released with high pressure causes noise above 130 dB. According to recent studies, loud noise above 120 dB has a strong vibrational energy that leads to a negative influence on electronic equipment with a high degree of integration. In this study, a basic fire-extinguishing nozzle with absorbent was selected as the reference model, and numerical analysis was conducted using the commercial software, ANSYS FLUENT ver. 18.1. A total of 45 experiment points was selected using the design of experiment (DOE) method. An optimum point was derived using the response surface method (RSM). Results show that the vibrational energy of the noise was reduced by minimizing the turbulence kinetic energy. Pressure and velocity distributions were calculated and graphically depicted with various absorbent configurations.",
keywords = "CAA, CFD, Fire-extinguishing nozzle, Genetic aggregation, Optimization, RSM",
author = "Kim, {Yo Hwan} and Myoungwoo Lee and Hwang, {In Ju} and Kim, {Youn Jea}",
note = "Funding Information: This research was supported by a grant (19TBIP-C127229-03) from Ministry of Land Transportation Technology Business Support Program funded by Ministry of Land, Infrastructure and Transport of Korean government. This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the Korean Government. Funding Information: Acknowledgments: This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the Korean Government. Funding Information: Author Contributions: Supervision, Y.J.K.; writing original draft, Y.H.K. writing review and editing, Y.H.K., M.L. and I.J.H. All authors contributed to the manuscript. All authors read and approved the final manuscript. Korean government. Funding: This research was supported by a grant (19TBIP-C127229-03) from Ministry of Land Transportation Acknowledgments: This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the KgoovreearnnmGeonvte.rnment. Publisher Copyright: {\textcopyright} 2019 by the authors.",
year = "2019",
month = nov,
day = "15",
doi = "10.3390/en12224346",
language = "English",
volume = "12",
journal = "Energies",
issn = "1996-1073",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "22",
}