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WARM

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Basic Information

Name of Program

WARM

Version-Date

V1.x/August 1999

Description-Date

August 1999

Catchwords

numerical simulation of wave propagation
two-dimensional energy density spectrum
wave rays
shoaling
refraction of waves due to bathymetry and current velocity
energy input due to wind induced shear stress
energy dissipation due to turbulence and bottom friction

Short Description of Functionality

The mathematical model WARM (Wave Ray Model) is a wave model which is based on the transport equation for the two-dimensional energy density spectrum. The equation is solved in the frequency directional domain. The model is able to take into account several effects related to the influence of bathymetry, current velocity and water level, namely

  • refraction by bottom friction and current variations,
  • shoaling,
  • wave current interaction (wave blocking), as well as
  • non-linear dissipation of wave energy.

WARM was developed on behalf of Bundesanstalt für Wasserbau, Außenstelle Küste by GKSS Research Center, Geesthacht.

Input-Files

  1. general input data (filetype warm.dat)
  2. model topography:
  3. (optional) computational results (time series) for hydrodynamics (files of type dirz.bin.r, dirz.bin.i and dirz.bin)
    Notice: in situations where time series of computed hydrodynamic data are used the corresponding grid file of type gitter05.dat/bin must be supplied.
  4. (optional) wind field (filetype tr2.met.bin.i and filetype tr2.met.bin)

Output-Files

  1. paths of wave rays (filetype insel.dat)
  2. (optional) trace of program execution (filetype warm.trc)

Methodology

In a first computational step paths for wave rays are determined. The equation for energy transport is used to calculate the two-dimensional energy density spectrum. This equation is solved in the frequency directional domain. The calculations are carried through on a grid which consists of a set of right-angled triangles.

Program(s) to run before this Program

FDGITTER05, FD2MET, TR2GEOM, ZEITR

Program(s) to run after this Program

FDGITTER05, HVIEW2D

Additional Information

Language

Fortran77

Additional software

-

Original Version

GKSS Research Center,Geesthacht

Maintenance

N.Winkel

Documentation/Literature

see $PROGHOME/examples/warm/
please refer also to Anwendung des Seegangsmodells WARM published in No. 1/1998 of Supercomputing News (text is available in German only). This text illustrates the application of the model to study wave motion in the harbour of Rostock-Warnemünde.


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