한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제19권3호
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  • Pages.136-142
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  • 2021
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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PIV와 LDV를 이용한 냉각수 토출구 주위의 와류 가시화 연구

Visualization of Vortex Flow around Coolant Outlets Using PIV and LDV

  • Hong, Ji-Woo (Department of Naval Architect and Ocean Engineering, Chungnam National University) ;
  • Shin, Su-Yong (Structure/Vibration & Noise, R&D Department, Daewoo Shipbuilding and Marine Engineering) ;
  • Ahn, Byoung-Kwon (Department of Naval Architect and Ocean Engineering, Chungnam National University)
  • 투고 : 2021.12.10
  • 심사 : 2021.12.29
  • 발행 : 2021.12.31
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초록

Submerged and semi-submerged vehicles expel cooling water through an outlet. In this process, induced noise and vibration by the flow around the outlet have been reported, and it may cause problems directly related to survivability of the navy vessels. The coolant outlet has a net-type structure and circular columns are mostly used. In this study, flow measurements using PIV and LDV were performed for different type outlets; conventional (flat plate with round bar) and improved (flat and flat plate) configurations. Experiments were conducted at a cavitation tunnel where pressure and steady flow rate conditions are ensured for sufficient time to measure the flow. The average velocity field of the outlets were measured and compared through LDV measurements, and instantaneous vorticities were evaluated through PIV measurements. The results show that the improved type of the outlet is advantageous in terms of flow stability compared to the conventional type of the outlet.

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과제정보

이 성과는 (주)대우조선해양의 지원으로 수행된 연구임.

참고문헌

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