MTMC (Mike Turbine Mesh Correction) is a MATLAB package for performing a correction to improve the accuracy of the modelling of tidal turbines in the MIKE 3 by DHI hydrodynamic modelling suite.
Author: Simon Waldman, Heriot-Watt University, 2015-2016.
See [1] for more information, especially on limitations. If you use this package in work that leads to publication, a citation of [1] would be appreciated. I would also appreciate hearing about your experience on smw13@hw.ac.uk. The latest version of this package may be found at https://github.com/TeraWatt-EcoWatt2050/MTMC
- MIKE Zero (or the MIKE SDK) must be installed on the computer.
- The MIKE Matlab toolbox (from DHI) must be on the Matlab path.
- The mike_tools package, available at https://github.com/TeraWatt-EcoWatt2050/MIKE_tools
To use a package of this type: Copy the whole folder +MTMC - not just
the contents of the folder - into your MATLAB path. Do not rename it.
Call functions from the package by prepending MTMC. to their names.
Example: If you keep your MATLAB scripts in D:\matlab-scripts, then this could be in D:\matlab-scripts+MTMC. D:\matlab-scripts would need to be on the path (or be the current directory) but D:\matlab-scripts+MTMC would not need to be.
- Set up model in MIKE3, giving turbines a fixed correction factor of 1 (as per default). The thrust curve should be specified using the "Tabulated drag and lift coefficient" option, even if it is constant. The mesh must use cartesian (not spherical / lonlat) coordinates.
- Run the model, making sure that you have enabled Turbine Outputs. These are needed to provide this package with prior flow speed and direction information.
- Run MTMC.MakeCorrection. This function takes five inputs which are filenames - see the function's header for more info. This will produce a .dfs0 file of correction factors for each turbine and each timestep, and will modify the model definition file to point to this.
- Run the model again.
Optionally, run MTMC.MakeCorrection and the model further times until an acceptable convergence is reached. This should only be necessary if using a variable thrust coefficient (because the flow speed and thrust coefficient both depend on one another).
The version used for the EWTEC paper is tagged "EWTEC_paper". This version also provided all figures for the EWTEC presentation except for the last, which came from the version tagged "EWTEC presentation".
[1] Waldman S, Genet G, Baston S and Side J (2015) Correcting for mesh size dependency in a regional model’s representation of tidal turbines. EWTEC conference 2015. Available at: http://www.simonwaldman.me.uk/publications/2015/EWTEC_Correcting_for_mesh_size_dep.pdf Also included in this repo under "/publications/".