Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Comparative Study between Results of Theoretical Calculation and Model Test for Performance Confirmation of "Crown Duct"

  • Lee, Kwi-Joo (Department of Naval Architecture and Ocean Engineering, Chosun University) ;
  • An, Jung-Sun (Department of Naval Architecture and Ocean Engineering, Chosun University) ;
  • Kwak, Han-Joung (SPP Ship yard)
  • Received : 2013.07.19
  • Accepted : 2014.02.13
  • Published : 2014.02.28
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Abstract

Chosun University, in cooperation with SPP shipyard, has developed an energy saving device based on a new concept: "Crown Duct." Crown Duct is composed of a semi-duct with short struts inside and outside the duct. Theoretical calculations for two different designs were carried out using the CFD code "Ship Flow." The design selected from these two different forms by the CFD code analysis was tested in a towing tank at SSPA. The results showed about 4% efficiency gain under a full-load condition and about 7% gain under a ballast condition in the towing tank test.

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References

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