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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.