• Title/Summary/Keyword: 1톤의 화물을 1해상 마일 운반 시 배출되는 이산화탄소량

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A Study on Performance of Tip Rake Propeller in Propeller Open Water Condition (P.O.W 상태에서의 Tip Rake Propeller에 대한 성능연구)

  • Lee, Joon-Hyoung;Kim, Moon-Chan;Shin, Yong-Jin;Kang, Jin-Gu;Jang, Hyun-Gil
    • Journal of the Society of Naval Architects of Korea
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    • v.54 no.1
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    • pp.10-17
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    • 2017
  • This paper deals with a comparison of performance between tip rake propeller and normal propeller in P.O.W condition. In comparison with normal propeller, tip rake propeller is good at preventing occurring negative effect: tip vortex, etc. But, officially formulated information about tip rake propeller doesn't become known. So this paper makes design variables about rake factors and applies them to propeller geometry. And propellers applied design variables are compared with each other about open water propeller efficiency. Also this paper confirms a vorticity reduction at propeller tip.

Development of the New Energy Saving Device for the Reduction of Fuel of 176k Bulk Carrier (176k Bulk Carrier의 연료저감을 위한 새로운 Energy Saving Device 개발)

  • Song, Hyun-Jin;Kim, Moon-Chan;Lee, Won-Joon;Lee, Kyoung-Wan;Kim, Ji-Hee
    • Journal of the Society of Naval Architects of Korea
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    • v.52 no.6
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    • pp.419-427
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    • 2015
  • Recently Energy Saving Device has been developed actively due to the regulation of the EEDI. This Energy Saving Device which is newly developed is integrated duct and stator. This paper verified performance of the Energy Saving Device through CFD. The experimentation to find the best pitch angle of each blade of the stator designed has been conducted. The angle of incidence of the duct has been obtained through the measurement of the wake. The experimentation has been carried out with and without Energy Saving Device. The efficiency increase was through these two experiments.