CAJ | 학술논문

通过分离涡模拟法（detached eddy simulation，DES）对半潜式钻井服务支持平台拖航阻力进行了研究，重点对平台拖航阻力、阻力系数和平台表面附近流场分布等特性进行了研究。研究表明：流方向下平台各结构所受阻力各不相同，下浮体占据总阻力比最大（尤其是90°来流方向下）。阻力系数及升力系数时历曲线变化具有“脉动性”。通过平台表面附近流场分布可以分析涡形成及受力原因，逆方向流及涡之间相互作用使得阻力有所减小。
통과분리와모의법（detached eddy simulation，DES）대반잠식찬정복무지지평태타항조력진행료연구，중점대평태타항조력、조력계수화평태표면부근류장분포등특성진행료연구。연구표명：류방향하평태각결구소수조력각불상동，하부체점거총조력비최대（우기시90°래류방향하）。조력계수급승력계수시력곡선변화구유“맥동성”。통과평태표면부근류장분포가이분석와형성급수력원인，역방향류급와지간상호작용사득조력유소감소。
Detached eddy simulation (DES)is applied to research on drag force of semi-submersible tender sup-port vessel.The drag force,drag coefficient,lift coefficient and flow field on surface of the platform are studied in this paper.It is demonstrated that drag force on every structure of the platform varies with the incidence angle of current.Drag force on pontoon accounts for the largest proportion of that on the platform,especially at inci-dence angle of 90.The"beating"behavior appears in the time history of drag coefficient and lift coefficient.The reason of vortex formation and force on surface of platform is discussed in terms of the flow field near the platform surface.Counter current and interaction between vortices can reduce drag force of the platform.