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Idealized Channel Problem: Difference between revisions

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(Created page with "This example tests ADCIRC version 55 (and beyond). It tests the simulation of a diurnal tide on a sloping beach with a channel along its centerline<ref name=Keith>Roberts, K.J...")
 
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This example tests ADCIRC version 55 (and beyond). It tests the simulation of a diurnal tide on a sloping beach with a channel along its centerline<ref name=Keith>Roberts, K.J., Dietrich, J.C., Wirasaet, D., Pringle, W.J., Westerink, J.J., 2020. Dynamic Load Balancing for Predictions of Storm Surge and Coastal Flooding. In Preparation, pp.~37.</ref>. The test finishes in about 8 minutes in parallel ADCIRC (2 processors) for 6 hours of simulation. Find the test at the [https://github.com/adcirc/adcirc-cg-testsuite/tree/v55/adcirc/adcirc_ideal_channel-2d-parallel GitHub test suite].
This example tests ADCIRC version 55 (and beyond). It tests the simulation of a diurnal tide on a sloping beach with a channel along its centerline<ref name=Keith>Roberts, K.J., Dietrich, J.C., Wirasaet, D., Pringle, W.J., Westerink, J.J., 2020. Dynamic Load Balancing for Predictions of Storm Surge and Coastal Flooding. In Preparation, pp.37.</ref>. The test finishes in about 8 minutes in parallel ADCIRC (2 processors) for 6 hours of simulation. Find the test at the [https://github.com/adcirc/adcirc-cg-testsuite/tree/v55/adcirc/adcirc_ideal_channel-2d-parallel GitHub test suite].


== Mesh ==  
== Mesh ==  
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== Options/Features Tested ==
== Options/Features Tested ==
*<code>[[ICS]]</code> = 20: Equal-Area cylindrical projection.
*<code>[[IM]]</code> = 111112: Uses the explicit scheme (computational time step is 2 seconds).  
*<code>[[IM]]</code> = 513111: Uses the implicit scheme for the linear component of the gravity wave term (computational time step is 4 minutes).
*<code>[[A00, B00, C00]]</code> = 0.0, 1.0, 0.0: Must be used with explicit scheme.
*<code>[[NTIP]]</code> = 2: Equilibrium tide + self-attraction and loading tide (read from a [[fort.24 file]]) forcing for 8 tidal constituents.
*<code>[[NWS]]</code> = 14014: Reads from GRIB2 files that specify the global atmospheric forcing and sea-ice concentration (6-hourly CFSv2 reanalysis data). Sea-ice concentration affects the wind drag coefficient<ref name=Brian></ref>. 
*<code>[[WTIMINC]]</code> = 21600, 21600: First value gives the temporal interval of the GRIB2 met data (6 hours), second value gives the temporal interval of the GRIB2 ice data (6 hours) - these should always be the same.
*<code>[[A00, B00, C00]]</code> = 0.4, 0.4, 0.2: Ensures that the implicit scheme is stable with a fairly large time step.
*<code>[[ESLM]]</code> = -0.2: Enables the Smagorinsky turbulence closure with a coefficient of 0.2.
*<code>[[NOUTGE]]</code> = 5: Outputs the global elevations into a netCDF4 [[fort.63 file]].  
*<code>[[NOUTGE]]</code> = 5: Outputs the global elevations into a netCDF4 [[fort.63 file]].  
*<code>[[NOUTGV]]</code> = 5: Outputs the global velocities into a netCDF4 [[fort.64 file]].  
*<code>[[NOUTGV]]</code> = 5: Outputs the global velocities into a netCDF4 [[fort.64 file]].  
*<code>[[NOUTGM]]</code> = 5: Outputs the global meteorology into a netCDF4 [[fort.73 file]] (pressure) and a netCDF4 [[fort.74 file]] (velocity).  
*<code>[[NOUTGM]]</code> = 5: Outputs the global meteorology into a netCDF4 [[fort.73 file]] (pressure) and a netCDF4 [[fort.74 file]] (velocity).  
*[[fort.13_file#Internal_Tide_Energy_Conversion|internal_tide_friction]]: Spatially varying linear wave drag [[fort.13 file]] attribute accounting for energy conversion due to internal tide generation in the deep ocean.
*[[fort.13_file#Sponge|sponge_generator_layer]]: Spatially varying linear wave drag [[fort.13 file]] attribute accounting for energy conversion due to internal tide generation in the deep ocean.
*[[Fort.15_file_format#Namelists|&WarnElevControl namelist]]: Set "WarnElev", the warning elevation level, to 30-m (elevations reach beyond 20-m [default] but remain below 30-m).
*[[Fort.15_file_format#Namelists|&metControl namelist]]: Set "rhoAir", to 1.29193 (density of air at 0 deg C for 1013 mbar); set "WindDragLimit" equal to 0.0025; set "invertedBarometerOnElevationBoundary" to true (in Alaska extremely large-scale low pressure systems persist and cross over the open boundaries, so it is important to have the inverted barometer condition along the elevation specified boundary); set "outputWindDrag" to true.


== References ==
== References ==
<references />
<references />

Revision as of 18:55, 8 June 2020

This example tests ADCIRC version 55 (and beyond). It tests the simulation of a diurnal tide on a sloping beach with a channel along its centerline[1]. The test finishes in about 8 minutes in parallel ADCIRC (2 processors) for 6 hours of simulation. Find the test at the GitHub test suite.

Mesh

The mesh was generated using the OceanMesh2D Alaska Example_8_AK.m. The domain encompasses the Gulf of Alaska, Bering Sea, and Chukchi Sea with a minimum resolution of 5 km, comprised of 15,876 vertices and 27,757 triangular elements.

Options/Features Tested

References

  1. Roberts, K.J., Dietrich, J.C., Wirasaet, D., Pringle, W.J., Westerink, J.J., 2020. Dynamic Load Balancing for Predictions of Storm Surge and Coastal Flooding. In Preparation, pp.37.