http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
손명환,한철희,Sohn, Myong-Hwan,Han, Cheol-Heui 한국군사과학기술학회 2007 한국군사과학기술학회지 Vol.10 No.3
The present survey paper introduces the research history, characteristics of body and fin shapes, basic principles of various locomotions and propulsion-generation mechanism of aquatic animals in nature, which utilize unsteady flow through a noble mechanism that is different in paradigm from the propulsion generation mechanism of man-made marine vehicles, and so have excellent performance and efficiency. The authors hope that the present paper helps to activate the domestic research interest on the fields of swimming in nature, which is expected to provide great ideas for improvement and innovation of today's marine vehicles.
손명환,이승희,한철희,Sohn, Myong-Hwan,Lee, Seung-Hee,Han, Cheol-Heui 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.6
The swimming abilities of aquatic-animals are of vital importance to their ecology. The relationship between outer shapes and the swimming ability has been focused just a few centuries ago by engineering community. Present paper surveys the recent studies of the aquatic-animals' swimming performance in the morphological point of view. Also an experimental study is performed in order to investigate the effect of the tail fin's shape on the propulsive performance. The result showed that the morphological study provided valuable data for exploring the secrets of the aquatic-animals' swimming performance.
Digital Holographic Particle Tracking Velocimetry 기법을 사용한 동물성 플랑크톤(요각류 Calanus sinicus)의 헤엄침 양태 연구
손명환,박병화,최용석,이상준,강영실,강양순,Sohn, Myong-Hwan,Park, Byung-Hwa,Choi, Yong-Seok,Lee, Sang-Joon,Kang, Young-Sil,Kang, Yang-Soon 한국군사과학기술학회 2010 한국군사과학기술학회지 Vol.13 No.5
The present study investigated the swimming pattern and appendage postures of a copepod species, Calanus sinicus, which prevails in the south-east sea of the Korean peninsula, by employing a digital holographic particle tracking velocimetry(PTV) technique. The results showed that the copepod Calanus sinicus had various swimming patterns such as hover, hop, sink, cruise, and downward cruise. Most frequent pattern was the 'hop and sink'. The average swimming speeds ranged from 1.1 to 45.7 body-lengths/s, and the corresponding flow Reynolds number ranged from $10^0$ to $10^2$.
운동성 조류 P. minimum의 헤엄침 성능에 대한 연구
손명환(Myong Hwan Sohn) 대한기계학회 2018 大韓機械學會論文集B Vol.42 No.9
본 논문은 와편모조류의 일종으로 적조를 발생시키는 운동성 조류인 Prorocentrum minimum의 헤엄침 성능을 디지털 홀로그래픽 PTV(Particle Trajectory Velocimetry)를 사용하여 실험적으로 연구하였다. P. minimum은 와편모조류 종의 전형적인 나선 헤엄침 궤적을 갖는 것이 관찰되었으며, 110개 셀의 헤엄침 속도의 평균값은 81.5 μm/s이었다. 나선 궤적의 반경과 피치의 평균값은 각각 4.9 μm과 46.1 μm이었다. 이와 같은 나선 운동요소의 값은 다른 실험연구 혹은 이론연구에서 관찰하거나 계산한 다양한 와편모조류 종의 운동요소 값의 범주 안에 분포하였다. 측정한 헤엄침 속도는 나선 헤엄침 궤적의 반경과 피치와 높은 양의 상관관계를 가졌다. This study investigates experimentally the swimming performance of Prorocentrum minimum, which is a species of dinoflagellates and motile algae causing red-tide by employing the digital holographic Particle Trajectory Velocimetry (PTV). It was observed that P. minimum cells showed the helical swimming trajectories, which are typical of dinoflagellate species, and the mean swimming speeds of 110 cells was 81.5 μm/s. The mean values of the radius and pitch of the helical trajectories were 4.9 μm and 46.1 μm, respectively. These values were within the range of those observed or calculated in other experimental or theoretical studies for various dinoflagellate species. The measured swimming speed had a high positive correlation with the radius and the pitch of the helical trajectory.