Hydrodynamic modeling of mixture's zones of urban effluents
in the Halifax Harbour
Period of execution: June 1999 to August 2000
Customer's Name: Contract with Halifax Harbour Solution
Project in collaboration with BPR advising Groups and NSRI Water.
Summary:
The study's principal objective was to determine the optimal
location, the configuration and the influential zone of the Halifax Harbour's
urban effluent, following a vast limitation to pollution and a routine check
within the port.
Principal activities carried out:
- Adaptation and validation of a 3D hydrodynamic model
with the finite elements method to simulate tidal, wind and density structure
generated currents in the Halifax Harbour;
- Adaptation and validation of a 3D advection/diffusion/transport model allowing
for the use of the 3D hydrodynamic model's results while increasing the space
resolution;
- Construction and validation of two meshing with the finite elements method
of Halifax's Port. The meshing is irregular and contains, on the whole, approximately
3500 elements and 7500 nodes of triangular shape;
- Development of a procedure which permits the joining of two 3D hydrodynamics
models, one after the other;
- Analysis of historical data in order to determine the hydrodynamic model's
open boundary conditions. These data were also used to determine the initial
conditions and also to calibrate and validate the hydrodynamic model;
- Selection and realization of scenarios allowing us to analyze the impact
of extreme climatic conditions such as tides, longitudinal winds, and seasonal
stratification on suspended matter circulation, mixture and exchanges within
Halifax Harbour;
- Analysis of the results of the hydrodynamic model;
- Selection and realization of scenarios allowing us to analyze, using the
3D diffusion-transport model, the urban rejections' influence zone when they
arrive at the surface - using the results of the 3D model;
- Analysis of the results of the advection/diffusion/transport model;
- Participation within the development of scenarios allowing us to analyze
and optimize the underwater emissary's location, shape and dimensions in order
to ensure an optimal dilution when rejections are going towards the surface;
- Analysis of research reports.
Reports, Presentations, Publications:
Meunier, C., A. Charron, Y. Charron, J. Gauthier et M.
Gagnon, 2000. Halifax Harbour Clean-up Environmental
Modelling. Sept 2000.
Boudreault,P, M. Gagnon ,M. Leclerc, P.Boudreau et J.Gauthier,1999. Modélisation
hydrodynamique des zones de mélange des effluents urbains dans le Port
de Halifax. Contrat avec Halifax Harbour Solution Projet. En partenariat avec
BPR Groupe-conseil et INRS-Eau, Jui. 1999
Back to resources
