Model Coupling: Difference between revisions

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'''Model Coupling (steering)'''
'''Model Coupling (steering)'''


In order to combine the capabilities of the two main numeric engines of Flow and Waves, the user must pass information from one engine to the other.  In the case of CMS-Flow, this means reading in wave data from CMS-Wave. Information passed to CMS-Flow includes reading radiation stress gradients that directly impact currents (wave driven currents) and height fields, wave directions and breaking data which enter into the sediment transport rate formulations. In the case of CMS-Wave, the option exists to read in currents and simulate their transformation by the current.  For either situation, the data fields must be interpolated onto the native domain (interpolate wave data onto the flow grid and/or flow data onto the wave grid).
CMS-Flow and CMS-Wave can be run separately or coupled together using a process called steering. The variables passed from CMS-Wave to CMS-Flow are the significant wave height, peak wave period, wave direction, wave breaking dissipation, and radiation stress gradients. CMS-Wave uses the update bathymetry, water levels, and currents from CMS-Flow.


This may be done interactively using the tools in SMS.  However, it is much more efficient to read or define simulations for both engines, and invoke the steering module from the Data menu. This tool runs the engines separately, but interpolates the output and passes it to the other engine automatically.
      <math> \eta(x,y,t+\delta t) = \bar{\eta}(x,y,t) </math>  
 
where
{| border="1"
! Symbol!! Description !! Units
|-
|  <math>\eta</math>  || Water surface elevation || m
|}
----
 
[[CMS#Documentation_Portal | Documentation Portal]]

Revision as of 21:15, 13 May 2010

Model Coupling (steering)

CMS-Flow and CMS-Wave can be run separately or coupled together using a process called steering. The variables passed from CMS-Wave to CMS-Flow are the significant wave height, peak wave period, wave direction, wave breaking dissipation, and radiation stress gradients. CMS-Wave uses the update bathymetry, water levels, and currents from CMS-Flow.

where

Symbol Description Units
Water surface elevation m

Documentation Portal

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