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신명수,문일성,나영인,박종천,Shin, Myung-Soo,Moon, Il-Sung,Nah, Young-In,Park, Jong-Chun 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.2
This paper presents the experimental result to investigate the characteristics of turbulent wake generated by submarine. A SUBOFF nude model which was assumed as an axial -symmetric body was used to create wake, and a thin strut was mounted on the top of the model. The experiments were conducted in a circulating water channel(CWC), and a hot-film was used to measure the turbulence in wake cross-section at the distance range of 0.0~2.0L from the model. The hot film anemometer measured turbulent velocity fluctuations, and the timeaveraged mean velocity and turbulent intensity are obtained from the acquired time-series data. Measured results show well the general characteristics of turbulent intensity, kinetic energy and mean velocity distribution. Also, experimental equations are derived. These experimental equations show well the general characteristics of the turbulent wake behind the submerged body with simple configuration.
중고선 개조와 신조에 의한 CO<sub>2</sub> 운송선 확보 및 운용방안에 관한 연구
신명수,박범진,기민석,이대학,Shin, Myung-Soo,Park, Beom Jin,Ki, Min Suk,Lee, Dae Hak 한국해양환경•에너지학회 2015 한국해양환경·에너지학회지 Vol.18 No.1
This paper presents the feasibility study on $CO_2$ carrier for carbon dioxide marine geological storage. Conceptual design was carried out to acquire $CO_2$ carriers by retrofitting existing vessels and new ship-building. Based on conceptual design, the acquisition cost of $CO_2$ carriers was estimated. Finally, necessary expense and number of ships were estimated based on operational plans for the assumed scenario. 본 연구에서는 이산화탄소 해양지중저장을 위한 운송 수단으로 활용될 $CO_2$ 운송선의 타당성조사 결과에 대하여 논한다. 중고 화물선 개조에 의한 $CO_2$ 운송선 확보와 신조에 의한 운송선 확보를 위한 개념 설계를 수행하였고, 이를 토대로 $CO_2$ 운송선의 획득 비용을 추정하였다. 마지막으로 가정한 시나리오에 대한 운용 방안을 검토하여 연간 운송량을 수송할 수 있는 필요 척수와 소요 비용을 함께 추정하였다.
신명수,윤병민,송정국,이석재,박상현,정연우,Shin, Myung Soo,Yun, Byung-Min,Song, Jung Kook,Lee, Seog Jae,Park, Sang Hyun,Jeong, Yeon Woo 제주대학교 의과학연구소 2018 The Journal of Medicine and Life Science Vol.15 No.2
The reconstruction method of nasal area can be used differently depending on the location, size, age. In this elderly female patient case, without using the forehead medial flap, good results can be obtained by using an advancement flap considering the nasal aesthetic unit.
자항하는 SUBOFF 모형 난류항적 계측 및 실험식 유도
신명수,문일성,나영인,박종천,Shin, Myung-Soo,Moon, Il-Sung,Nah, Young-In,Park, Jong-Chun 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.3
This paper presents experimental results and derived experimental equations to investigate the turbulent wake characteristics generated by the self-propelled SUBOFF submarine model. A self-propelled SUBOFF model which was assumed as an axial-symmetric body was used to create wake, and a thin strut was mounted on the topside of the model. The experiments were conducted in a circulating water channel(CWC), and the hot-film was used to measure the turbulence in wake cross-section at the distance range of 0.0~2.0L from the model. The hot film anemometer measured turbulent velocity fluctuations, and the time-averaged mean velocity and turbulent intensity are obtained from the acquired time-series data. Measured results show well the general characteristics of turbulent intensity, kinetic energy and mean velocity distribution. Also, this paper presents derived experimental equations, which is extended result to the reference [1]. These experimental equations show well the general characteristics of the turbulent wake behind the self-propelled submerged body.
신명수,문일성,나영인,박종천,Shin, Myung-Soo,Moon, Il-Sung,Nah, Young-In,Park, Jong-Chun 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.1
This paper presents bubble wake measurement results generated by the planing hull. The bubble was generated by SNAME TMB model(No. 4876) with hard chine at the CWC(Circulating Water Channel). ABS(Acoustic Bubble Spectrometer) was used to measure bubble wake measurement. The manufactured model is one meter in length and uniform velocity to generate the bubble at CWC is 3m/s, relatively higher speed than conventional hull form. Measurements were performed successfully and measured results show well the general characteristics of bubble wake generated by planing hull. Furthermore, experimental equations are proposed for the practical use.
신명수(Myung-soo Shin),박준협(Jun-hyub Park),서정윤(Jeong-yun Seo) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
The Probe Card is a test component which is to classify the good semiconductor chips before and after the packaging. The yield of semiconductor product can be improved by analysis of probe test information. An micro-probe tip must be manufactured using thin film to evaluate integrity of the semiconductor with narrow distance between pads. An electric break down of natural oxide film on metal contact, which is known as fritting, is a factor to decrease the performance of probe card. Therefore, a force over 5 gf is necessary to make good contact to electrodes. In addition, the probe tip has the life of more than 200,000 cycles, and the over drive above 50um to contact all pads, simultaneously. In this study, fatigue tests were performed for micro probe tip of BeCu to validate reliability of the probe. The fatigue test of load control with 5㎐ frequency was performed, in ambient environment. The fatigue cycles were compression-compression with mean stress, at stress ratio, R=0.l.