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Numerical simulations for current generation of constant and variable velocity profiles in deepwater ocean engineering basin of Kriso

Authors
Hwang, M.P.E.H.S.-C.Nam, B.W.Cho, S.-K.Sung, H.-G.
Issue Date
2018
Publisher
International Society of Offshore and Polar Engineers
Keywords
Basin; CFD; Current; Variable Profile
Citation
13th ISOPE Pacific/Asia Offshore Mechanics Symposium, PACOMS 2018, pp 146 - 154
Pages
9
Journal Title
13th ISOPE Pacific/Asia Offshore Mechanics Symposium, PACOMS 2018
Start Page
146
End Page
154
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8418
ISSN
0000-0000
Abstract
A series of numerical simulations were carried out to investigate the current generation performance in deepwater ocean engineering basin (DOEB) of KRISO. In the numerical simulations, unsteady Reynolds averaged Navier-Stokes (RANS) equations were solved to study the flow characteristics of the current generated in the basin. Three different current profiles, i.e. uniform, Gulf of Mexico (GoM) and Brazil profiles, were directly generated by applying the same current generation system as the DOEB and their accuracy was examined. In addition, an optimization algorithm based on cost function is newly proposed to control the inlet and outlet velocities of the multiple culverts for the desired current velocity profile. Through various numerical simulations, discussion are made on free surface elevation, effect of initial ramping operation, effect of false bottom plate, and full 3D simulation. Copyright ? 2018 by the International Society of Offshore and Polar Engineers
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친환경해양개발연구본부 (심해공학연구센터)
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