An adaptive finite element water column model using the Mellor–Yamada level 2.5 turbulence closure scheme
- 作者：Emmanuel Hanert ; Eric Deleersnijder and Vincent Legat
- 关键词：Mellor and Yamada ; Turbulence closure ; Finite elements ; Adaptivity ; Mixed layer deepening
- 刊名：Ocean Modelling
- 出版年：2006
- 期刊代码：96_14635003
- 类别：cp
- 出版时间：2006
- 卷：12
- 期：1-2
- 页码：205-223
- 文件大小：339 K
摘要
A one-dimensional water column model using the Mellor and Yamada level 2.5 parameterization of vertical turbulent fluxes is presented. The model equations are discretized with a mixed finite element scheme. Details of the finite element discrete equations are given and adaptive mesh refinement strategies are presented. The refinement criterion is an “a posteriori” error estimator based on stratification, shear and distance to surface. The model performances are assessed by studying the stress driven penetration of a turbulent layer into a stratified fluid. This example illustrates the ability of the presented model to follow some internal structures of the flow and paves the way for truly generalized vertical coordinates.