• Title/Summary/Keyword: Flow incident angle

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A Study on Slamming Impact Pressure by a Numerical Method based on the Cartesian-grid System (직교격자계 기반의 수치계산법을 이용한 슬래밍 충격압력의 연구)

  • Kim, Ki-Yong;Lee, Young-Gill;Ha, Yoon-Jin;Kang, Ui-Ha;Park, Jeong-Ho;Lee, Sun-Kyu;Lee, Chang-Jin
    • Journal of the Society of Naval Architects of Korea
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    • v.56 no.4
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    • pp.308-315
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    • 2019
  • In this study, numerical simulations of slamming impact pressure acting on the flat plate and wedge type models using the cartesian-grid system and Modified Marker-Density Method (MMD method) were performed and the results were examined. The flat plate and wedge type models were selected as target objects, the turbulence characteristics were considered by applying the Sub-Grid Scale (SGS) turbulence model. Through this study, how the pressure acting on the target objects according to the incident angle influences the slamming impact pressure was examined and the results were compared with the flow characteristics of other experimental results. Also, the degree of slamming impact pressure is evaluated with respect to the cartesian-grid system and MMD method, which is easy to use and has a high degree of calculation for free surface.

The configuration analysis for the storyboard image (스토리보드 이미지 구성 분석)

  • Lim, Woon-Joo
    • Journal of Digital Convergence
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    • v.11 no.4
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    • pp.403-408
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    • 2013
  • The configuration analysis for the image appeared in the storyboard as the 1st stage to change the scenario to the image expressed the visual phenomenon image starting from the literalism. The simultaneity of description on the interpretative level of the narrative description may describe various information multiple simultaneously, the relationship has been presented as a lot of these information has been weaved as one episode. The incident time of narrative description as the scene described mainly objectively and illustratively has been used usefully to present the accurate information for characters or incidents. The time series of narrative description appeared as one episode by expressing various spaces or images under the continuity of flow according to the time. The collision image seen from the angle of internal ignition played a role to create the meaning colliding into each other or interconnecting symbolic effects appeared as respectively fragmented image, the continuity of space played a role of expressing the different symbol when the image of completely different space is connected to one context, the continuity of time as well makes a different symbolism by interpreting symbols appeared as each images under the flow of time. These results show that the narrative description may be expressed in accordance with the narrative structure from the viewpoints of narrative description, but the internal ignition may be interpreted through the cultural and periodical background widely known in those years based on the experience and information capability the audiences are keeping not by any descriptive structure. Images appeared in the internal ignition appeared by colliding into each other or amplifying mutually no related scenes and revealing the overall symbolism by reinterpreting again.