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http://dx.doi.org/10.3744/SNAK.2015.52.3.255

Wind Load and Flow Field Change with Respect to Various Configurations of a Drillship  

Jung, Youngin (University of Science and Technology)
Kwon, Kijung (Korea Aerospace Research Institute)
Publication Information
Journal of the Society of Naval Architects of Korea / v.52, no.3, 2015 , pp. 255-264 More about this Journal
Abstract
Wind load and flow field of a drillship with respect to various super structures were experimentally investigated in KARI 1m-wide wind tunnel with an atmospheric boundary layer simulation. Six-component external balance and Particle image velocimetry technique were used to measure wind load and velocity vectors in the flow-field around the model respectively. The experimental model was an imaginary shaped drillship with an approximated model which has 1/640 scale compared with recent typical drillships. The test Reynolds number based on the overall length was about 1.5×106. It was found that dominant factors influencing on ship wind load are cabin shape and cabin height. Round cabin has smaller axial wind load and narrow boundary layer around the ship than rectangular one, but its yawing moment at certain angles becomes higher. Low cabin height also show positive effects on axial wind load too. Hull shape and forecastle shape show relatively small influences on wind loads except for slight changes around ±45° wind directions.
Keywords
Drillship; Atmospheric boundary layer; Wind load; Particle image velocimetry(PIV);
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Times Cited By KSCI : 1  (Citation Analysis)
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