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http://dx.doi.org/10.5574/KSOE.2012.26.6.033

CFD Analysis of Underwater Standard Penetration Test Equipment  

Ko, Jin Hwan (Coastal Development and Ocean Energy Research Division, KIOST)
Jang, In Sung (Coastal Development and Ocean Energy Research Division, KIOST)
Kim, Woo Tae (Coastal Development and Ocean Energy Research Division, KIOST)
Kwon, O Soon (Coastal Development and Ocean Energy Research Division, KIOST)
Baek, Won Dae (Coastal Development and Ocean Energy Research Division, KIOST)
Publication Information
Journal of Ocean Engineering and Technology / v.26, no.6, 2012 , pp. 33-38 More about this Journal
Abstract
In our study, a closed-type penetration unit for standard penetration test (SPT) equipment was developed in order to operate in an underwater environment. This type causes energy dissipation, mainly due to the small gap between an airtight case and moving hammer. The dissipation was estimated through a CFD analysis. The computed dissipated energy was less than 1.2% compared to the potential energy of the hammer with the given gap. Subsequently, the impact energy of the underwater SPT equipment was within 1.2% of that for the SPT equipment on land.
Keywords
Offshore geotechnical investigations; SPT(Standard Penetration Test) equipment; Closed penetration part; CFD analysis;
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