David Dorchies

Articles de cet auteur 353 articles

Introduction
22 octobre 2009, par David Dorchies

Unit 2 computes the water surface profile in a canal under steady flow conditions. This water surface profile can be used as the initial condition for the unsteady flow computation in Unit 3. Steady flow calculations also allow to test the influence of modifications to structures or canal (...)
Introduction
22 octobre 2009, par David Dorchies

Unit 3 computes the water surface profile in the canal under unsteady flow conditions. The initial water surface profile is provided by Unit 2 (steady flow module). It is also possible to start from a previous unsteady flow calculation (hot start). Unit 3 allows, for example, to study the (...)
Identification of the upstream and downstream nodes of the model
22 octobre 2009, par David Dorchies

The program determines the model upstream node(s) where an upstream boundary condition in terms of discharge is required. It also determines the downstream node(s) where a downstream boundary condition (water level or a rating curve) has to be specified.
The upstream nodes of the model can (...)
How to order the reaches in the unknown vector to get an upper triangular matrix H
22 octobre 2009, par David Dorchies

The sorting algorithm will be described, using the previous example, focusing on the loop reaches (figure 3).
In the NODE column array is placed the list of the upstream nodes of the loop reaches, and in the 2 dimension REACH array is placed the list of the loop reaches connected to these (...)
Filling the H, B and A blocks
22 octobre 2009, par David Dorchies

The H block is filled at the same time as the RANGE list. Some -1 values are placed in this H block, at locations (i, j).
During the first step :
The column j is given through the downstream reach of the loop
The line i is given through the negative reach belonging to the same line (...)

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SIC^2 : Logiciel de Simulation Intégrée des Canaux et de leur Contrôle

David Dorchies

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