Identification of equivalent topography in an open channel flow using Lagrangian data assimilation

被引：14

作者：

Honnorat, Marc ^{[1
]}

Monnier, Jerome ^{[1
]}

Riviere, Nicolas ^{[2
]}

Huot, Etienne ^{[3
]}

Le Dimet, Francois-Xavier ^{[4
]}

机构：

[1] INRIA, INPG, LJK, BP 53, F-38041 Grenoble 9, France

[2] INSA Lyon, LMFA, Lyon, France

[3] INRIA Rocquencourt, Le Chesnay, France

[4] INRIA, UJF, LJK, F-38041 Grenoble 9, France

来源：

COMPUTING AND VISUALIZATION IN SCIENCE | 2010年 / 13卷 / 03期

关键词：

Variational data assimilation; Lagrangian observations; Adjoint model; Hydraulics; Open channel; Equivalent topography;

D O I：

10.1007/s00791-009-0130-8

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We present aLagrangian data assimilation experiment in an open channel flowabove a broad-crestedweir. The observations consist of trajectories of particles transported by the flow and extracted from a video film, in addition to classical water level measurements. However, the presence of vertical recirculations on both sides of the weir actually conducts to the identification of an equivalent topography corresponding to the lower limit of a surface jet. In addition, results on the identification of the Manning coefficient may allow to detect the presence of bottom

引用

页码：111 / 119

页数：9

共 31 条

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