Numerical simulation of spilled oil by fictitious domain method
Numerical simulation of spilled oil by fictitious domain method
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DOI：
10.1007/bf03167472
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发表时间：
2004-06
影响因子：
0.9
通讯作者：
H. Suito;H. Kawarada
中科院分区：
文献类型：
--
作者：
H. Suito;H. Kawarada
溢油污染造成严重的自然环境问题。为了采取有效措施应对此类事故，迫切需要了解油品在此类事故中的行为。尽管其在海上和冲浪区的行为都很重要，但本文重点讨论后一个问题。本研究对海滩上方和下方的海水和溢油流场进行了数值模拟。本研究采用 Cross 模型作为溢油本构方程。通过在溢油表面规定的摩擦型边界条件来考虑油的粘附特性。将各种流体的流动方程和它们之间的边界条件统一为单个流动方程以构建数值模型。虚拟域方法在统一过程中发挥着重要作用。由于方程的统一，计算变得相当简单。
Pollution due to spilled oil presents serious natural environment issues. In order to take effective measures against such accidents, the knowledge of behavior of oil in such accidents is urgently required. Although its behavior both offshore and in the surfzone is important, this paper concentrates on the latter problem. A flow field of seawater and spilled oil above and under the beach is simulated numerically in this study. This research effort adopts the Cross model as a constitutive equation for spilled oil. Oil adhesion properties are taken into consideration through a friction type boundary condition prescribed on the surface of spilled oil. Flow equations for respective fluids and boundary conditions between them are unified into a single flow equation to construct a numerical model. The fictitious domain method plays an important role in the unification procedure. Computation becomes rather simple due to unification of equations.