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나은수(Eunsoo NA),민승재(Seungjae MIN),오우석(Wooseok OH),이경훈(Kyounghoon LEE) 전남대학교 어업기술연구소 2022 어업기술연구소보고지 Vol.15 No.1
Seabed sediments are becoming a significant information for marine development and understanding the fishing environment. In this study, the backscattering strength according to the particle size of the seabed sediment was analyzed. The soil sample collection of this study was conducted with a gravity corer, and sound data collection at the station was performed using a 38kHz a scientific echosounder. Eco-view (8 versions) was used as the collected sound data. At the station where the Sand ratio was high, a high reflection strength was observed, and at the station where the Silt ratio and Clay ratio were high, a low reflection strength was found. Based on the reflection intensity results, it can be seen that the acoustic reflection intensity is high in the order of Gravel, Sand, Silt, and Clay.
장동순,신미수,백영수,나은수 한국정신과학학회 2000 韓國精神科學學會誌 Vol.4 No.1
본 논문은 에너지 분리 장치인 보텍스 튜프의 설계기술에 관한 것이다, 본 연구에서는 더운 공기와 찬 공기가 즉각적으로 분리되는 보텍스 튜브의 작동기전에 대한 새로운 제안으로서 공기의 냉온 유통 분리와 함께 유동이 구심성 황금나선형태를 이루어야 함을 가정하였다 . 이러한 작동기전 가설의 가능성올 전산유체역학 (Computational FlUid Dynamics) 적인 방법으로 확인하였다. 기타 보텍스 튜브의 효율적인 설계를 위한 전장, 직경, 배플등 중요변수에 대한 조직적 변수연구를 수행하여 보텍스 튜프 설계 이론을 획협하였다. 기타 본 연구의 중요성은 신과학 이론의 관점 에서 거론되던 빅터 샤우버거의 구심성 나선 운동의 이론과 황금나선의 공학적용용의 중요성을 확 인한 것에 있다고 할 수 있다. This paper is concerned about the design of the vortex tube, which is known as an noble energy separation device, by the use of the concept of golden spiral flow together with the tool of computational fluid dynamics. In this study the mechanism of energy separation is made under the condition of the flow separation together with golden spiral flow as a necessary condition and is partially confirmed by the method of the result of CFD simulation. Other systematic investigation has been performed with major design parameters such as length, diameter, and baffle, etc. The significance of this paper may be found in that the practical application of the theory of Schauberger with the concept of golden spiral is made ,which has been used as a term purely in new science and philosophy.