Difference between revisions of "TDKWF"

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|contact_original=[ G. Lang]
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|contact_maintenance=[ G. Lang], [ A. Sehili], [ S. Spohr]
|documentation=please refer to $PROGHOME/examples/Tdkwf/
|documentation=please refer to $PROGHOME/examples/Tdkwf/

Revision as of 12:11, 26 April 2010

Basic Information

Name of Program



8.x / August 2009


June 2009


analysis of numerically calculated results (2D/3D, profile-data as well as data at specific locations)
tidal characteristic numbers of water level
tidal characteristic numbers of morphodynamics
universal direct access format for 2D/3D-data
universal direct access format for profile-data
universal direct access format for data at specific locations
portable OpenMP multithreading

Short Description of Functionality



  1. general time-series input data (filetype tdkwf.dat)
  2. synoptic data which shall be analysed (files of type dirz.bin.r, dirz.bin.i, and dirz.bin)
  3. grid for 2D/3D-data (filetype gitter05.dat/bin or filetype untrim_grid.dat)
or profile-topography for profile-data (filetype profil05.bin)
or system file for specific locations (filetype location_grid.dat)


  1. results of data analyses (files of type dirz.bin.r, dirz.bin.i, and dirz.bin)
  2. informative printer file (filetype tdkwf.sdr)
  3. (optional) trace of program execution (filetype tdkwf.trc)


At first the extreme events (HW and LW) are determined for a network of reference locations for each tidal cycle. This ensures the phase-correct ordering of the events for all nodes of the computational grid, profile-topography or individual locations respectively. To arrive at a more precise calculation of the times and values for all tidal characteristic numbers of water level a spline interpolation is used to interpolate between equidistant time series data at each nodal point. Drying and wetting of tidal flats is taken into account by the algorithm.

In case of a time varying bathymetry (morphodynamics) the characteristic numbers of water level are evaluated using depth values corresponding to the minimum depth within the period of data analysis. This also holds true in case a so called alternative bathymetry is used, when the depth in the grid file is equivalent to the depth of the unerodible layer and the actual depth is constant in time but smaller than the depth specified in the grid file.

In all situations with actual depth different from depth given in the grid file, besides HW and LW also the values for maximum tidal depth as well as minimum tidal depth must be computed.

Program(s) to run before this Program


Program(s) to run after this Program


Additional Information



Additional software


Original Version

G. Lang


G. Lang, A. Sehili, S. Spohr


please refer to $PROGHOME/examples/Tdkwf/

back to Program Descriptions