More information: [People] [Projects] [Publications] [Computer Programs] [Links]
The picture above shows the results from modelling a braided laboratory channel.
Dr. Elena Pummer
Associate Professor
Prof. Jochen Aberle,
Technical University of Braunschweig, Germany
Prof. Catherine Wilson, Cardiff University, UK
Prof. Thorsten Stösser, University College London, UK
Prof. Stefan Haun,
Technical University of Graz, Austria
Dr. Helmut Knoblauch,
Technical University of Graz, Austria
Dr. Stefan Vollmer, Bundesanstalt für Gewasserkunde, Germany
Dr. Katinka Koll,
Technical University of Braunschweig, Germany
Dr. Gudrun Hillebrand, Bundesanstalt für Gewasserkunde, Germany
Dr. Peggy Zinke, Sciencemonastry AS, Norway
Dr. Sandor Baranya,
Budapest University of Technology and Economics, Hungary
Dr. Gabriele Harb, Verbund hydropower company, Austria
Dr. Kari Bråtveit, Statkraft, Norway
Dr. Irina Klassen, Bundesanstalt für Wasserbau, Germany
Dr. Francisco Núñez-González, Universitat Polytecnica de Catalunya, Spain
Dr. Clemens Dorfmann, Flow engineering, Austria
Dr. Subhojit Kadia, Technical University of Munich, Germany
Oscar Jimenez, DLZ, Costa Rica
Laura Lizano, Instituto Costarricence de Electricidad, Costa Rica
Pravin Aryal, Ministry of Energy, Water Resources and Irrigation, Nepal
The picture above shows a longitudinal profile of sediment deposition with antidunes. The grey area is the water, showing
turbulent kinetic energy with the greyscale. The coloured area is the average sediment diameter of the bed.
More information and download instructions for SSIIM
We have also made a sediment solver for OpenFOAM.
More information and download instructions for sediDriftFoam
Energy losses in rock-blasted tunnels
Modelling scour under leaky barriers
Studies of RANS vs LES in hydraulics
Modelling sediments in reservoirs.
Modelling sediments in reservoirs
Modelling sediment maintainence in rivers
Modelling scour around trees in rivers
Modelling formation of sand banks in rivers.
Modelling water and sediment flow in the delta of Lake Øyern
Modelling sediment transport and erosion in rivers.
Modelling sediments in reservoirs
Modelling water flow in sand traps
Modelling sediments in rivers and reservoirs.
Modelling antidunes
Modelling sediments in reservoirs
Modelling sediment flow with OpenFOAM
Modelling sediment flow in reservoirs
Modelling sediment flow in reservoirs
Modelling water flow in sand traps
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. Changes in bed elevation over time are computed, and algorithms for wetting and drying enables the
prediction of lateral channel movements.
"Computational Fluid Dynamics for Hydraulic and Sedimentation Engineering" was made for the CFD part in our class "Withdrawal of water from sediment-carrying rivers". The class notes provides a simple introduction to the basics of CFD. The latest version was made 16. June 1999.
User's manual for SSIIM (3.5 MB PDF)
The user's manual for SSIIM provides standard information about the SSIIM program, like user interface, data format for input and result files etc. The latest version was made 21. April 2018.
Numerical modelling and hydraulics (1.7 MB)
The class notes for a course with the same name, given for the first time in the spring 2001. It is an undergraduate course in the 4th year of the Civil Engineering study at NTNU. This is the version from March 2012.
CFD Algorithms for Hydraulic Engineering (678 kB)
The book is a more detailed documentation of general and special hydraulic engineering CFD algorithms. It is intended to be used as a textbook for graduate courses in CFD, and also to provide assistance for people writing CFD codes. The present version is from 14. December 2000, and before this date it has not been checked by anyone but the author.
CFD for Hydraulic Structures (535 kB)
The book is about experiences using the SSIIM model to compute flow in/around hydraulic structures. The following cases are discussed: Vegetation, spillways, local scour and intakes. The present version is from 8. May 2001.
  |
Updated: 23. February 2025 |
 |