Research group on:

Computational Fluid Dynamics in Hydraulic Engineering

Our department has been using and developing CFD models for hydraulic and sedimentataion engineering since 1990. Initial work was focused on sediment problems with regards to hydropower intakes, primarily due to the difficulties of modelling fine sediment in physical models. Since then the scope of our CFD research has expanded to other hydraulic and environmental topics.

More information: [People] [Projects] [Publications] [Computer Programs] [Seminar] [Links]

The picture above shows the grid of a self-forming meandering channel. The colours show the bed levels. More information


People

Staff

Prof. Nils Reidar B. Olsen
Teaching and research on CFD modelling

Dr. Knut T. Alfredsen
Teaching and research on habitat hydraulics

Post-doctoral researchers

Dr. Nils Rüther
Modelling local scour and lateral river movments

Doctoral students

Hans Bihs
Modelling erosion damages in rivers

Peggy Zinke
Modelling changes in the geomorphology of deltas

M.Sc students

Jens Jacobsen
Modelling flow in natural bends and spillways

External cooperating researchers

Dr. Catherine Wilson, University of Cardiff, UK
Modelling dispersion and vegetation in laboratory flumes and natural channels

Dr. Thorsten Stösser, Georgia Institute of Technology, USA
Modelling flow over sand dunes and particle/turbulence interaction

Prof. Wolfgang Rodi, University of Karlsruhe, Germany
Modelling flow and turbulence over sand dunes

Dr. Tim Fischer-Antze, Wald+Korbe, Karlsruhe, Germany
Modelling the geomorphological changes in the river Danube

Prof. Dieter Gutknecht, Vienna University of Technology, Austria
Modelling the geomorphological changes in the river Danube

Prof. Peter Rutschmann, Technical University of Munich, Germany
Modelling geomorphological changes in a channel with two bends

Dr. Robert Feurich, University of Innsbruck, Austria
Modelling geomorphological changes in a channel with two bends

Dr. Helmut Knoblauch, University of Graz, Austria
Modelling reservoir flushing

Dr. Susanne Krüger, Sulzer Pumps, Switzerland
Modelling supercritical flow

Oscar Jimenez, Instituto Costarricence de Electricidad, Costa Rica
Modelling sediment flow in reservoirs

Jim Bogen, The Norwegian Water Resources and Energy Directorate, Norway
Modelling changes in the geomorphology of deltas

Dr. Geir Vatne, Department of Geography, The Norwegian University of Science and Technology
Modelling scour in natural rivers

Dr. Raymond Eilertsen, The Geological Survey of Norway
Modelling changes in the geomorphology of deltas


Computer Programs

Most of our CFD work has been carried out using the SSIIM program. The program is based on the solution of the Navier-Stokes equations on a non-orthogonal 2D or 3D grid. Both structured and unstructured grid versions are used. The SIMPLE method is used for computing the pressure and the the k-epsilon model is used to calculate turbulence. The sediment transport is calculated by solving the convection-diffusion equation for sediment concentration. The convection-diffusion equations for various constituents are also solved when modelling water quality. This also includes biochemical reactions used when simulating for example organic material, algae, temperature, phosphorous or radioactive tracer.

More information and download instructions for SSIIM: [OS/2 version] [Windows/Linux version]


Publications

Listings of publications

On-line books

We have made some CFD books publically available on the PDF format. A short description and download links are given below.

CFD class notes (593 kB)

User's manual for SSIIM (1.2 MB)

Hydroinformatics, fluvial hydraulics and limnology (1.6 MB)

CFD Algorithms for Hydraulic Engineering (678 kB)

CFD for Hydraulic Structures (535 kB)


Projects

Several examples from our research are listed below. Much of the work has been carried out in cooperation with other institutions, so many of the examples are located on other web servers.

The numbers in brackets indicate size of graphics files in kB. The date indicate latest update.

Sediment transport

General hydraulics

Water quality

Habitat hydraulics


This page is made by

Nils Reidar B. Olsen

* NTNU
* Faculty of Civil and Env. Engineering
* Dept. of Hydraulic and Env. Engineering
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Updated: 15. May 2007
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Copyright © 2000-2007, Department of Hydraulic and Environmental Engineering, NTNU