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40 mm 화포용 베플형 소음기와 천공형 소음기에 대한 수치해석적 비교 연구
강태엽(T. Y. Kang),김상민(S. M. Kim),이해석(H. S. Lee),나태흠(T. H. Na),한태호(T. H. Han) 한국전산유체공학회 2012 한국전산유체공학회 학술대회논문집 Vol.2012 No.11
In this study, flow characteristics of baffle type and perforated type silencers for 40 mm caliber cannons were numerically investigated and noise attenuation effects provided by each silencer were compared. Numerical analysis was conducted by using a commercial CFD code, FLUENT. To analyze complex blast flow fields, the Spalart-Allmaras model was applied under 2 dimensional and axisymmetric conditions. In result, 6.4 % reduction in sound, pressure level(SPL) was obtained by the baffle type silencer, 4.3 % by the perforated type on average.
신승재,이도영,나태흠,이창식,김태연,S.J. Shin,D.Y. Lee,T.H. Na,C.S. Lee,T.Y. Kim 한국전자통신연구원 2024 전자통신동향분석 Vol.39 No.2
The 3GPP (3rd Generation Partnership Project) mobile communication standard has emerged as a leading standard in the market over the past 20 years, driving continuous development in protocol stacks and libraries that support the standard within simulation software for communication network research. We summarize and analyze seven communication network simulators that support the 3GPP standard specifications related to core network technologies. Through comparisons, we aim to offer valuable insights for researchers and engineers engaged into research and development related to mobile communication networks based on 3GPP standards. Our findings can provide assistance for making informed decisions on simulator selection.