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Difference between revisions of "Typical ADCIRC Parameter Selections"

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'''Parameter selections''' concern the model parameter choices one must make when setting up and running simulations. ADCIRC and the coupled ADCRC+SWAN model have a large number of user-controllable parameters. Some parameters represent a balance in model accuracy vs. stability, like enabling vs. disabling advection via [[NOLICA]] and [[NOLICAT]]). Others balance accuracy vs. run time, like the implicit vs. lumped explicit GWCE formulation via [[IM]] (this also affects stability). And other parameters represent values for which the true "best" choice is case-dependent or the subject of ongoing research, like controls on surface and bottom drag via the drag formulations at the sea surface and sea floor. This page is meant to provide users with example model formulations used by experienced ADCIRCers, and to provide a venue for discussion of parameter selection.  
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'''Parameter selections''' concern the model parameter choices one must make when setting up and running simulations. ADCIRC and the coupled ADCRC+SWAN model have a large number of user-controllable parameters. Some parameters represent a balance in model accuracy vs. stability, like enabling vs. disabling advection via [[NOLICA]] and [[NOLICAT]]). Others balance accuracy vs. run time, like the implicit vs. lumped explicit GWCE formulation via [[IM]] (this also affects stability). Meanwhile some parameters represent values for which the true "best" choice is case-dependent or the subject of ongoing research, like controls affecting drag formulations at the sea surface and sea floor. This page is meant to provide users with example model formulations used by experienced ADCIRCers, and to provide a venue for discussion of parameter selection.  
  
 
== In Storm Surge ==
 
== In Storm Surge ==

Revision as of 13:36, 5 June 2019

Parameter selections concern the model parameter choices one must make when setting up and running simulations. ADCIRC and the coupled ADCRC+SWAN model have a large number of user-controllable parameters. Some parameters represent a balance in model accuracy vs. stability, like enabling vs. disabling advection via NOLICA and NOLICAT). Others balance accuracy vs. run time, like the implicit vs. lumped explicit GWCE formulation via IM (this also affects stability). Meanwhile some parameters represent values for which the true "best" choice is case-dependent or the subject of ongoing research, like controls affecting drag formulations at the sea surface and sea floor. This page is meant to provide users with example model formulations used by experienced ADCIRCers, and to provide a venue for discussion of parameter selection.

In Storm Surge

The following table presents a variety of parameters as used in storm surge modeling by various groups. Parameters in this table cover a range of model setup choices, and include parameterizations built for forecasting-focused simulations, storm hazard-focused simulations, and hindcast-focused simulations.

Region Mesh np GWCE Formulation Drag Law Drag Limit FFACTOR Advective Terms Steric Vert. Datum ESL ESL Node Count time step h0 velmin tidal constituents convcr SWAN time step SWAN MXITNS SWAN NPNTS
Louisiana LA_v17a-WithUpperAtch_chk.grd 1593521 implicit Powell 0.002 0.0 off 0.228184 navd 0.05 all 1.0 0.1 0.01 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-07 1200 20 95
Texas tx2008_r35h.grd 3352598 implicit Garratt 0.002 0.0 off 0.276300 navd? none none 1.0 0.1 0.01 m2,s2,n2,k1,k2,o1,q1 1.00E-07 1200 20 95
National hsofs.14 1813443 implicit or explicit Garratt 0.0028 0.0025 off none msl none none 2.0 0.05 0.05 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-07 1200 20 95
National (Drag Experiment) hsofs.14 1813443 explicit Garratt 0.002 0.0 off none msl none none 2.0 0.05 0.05 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-07 1200 20 95
MS/AL and FL Panhandle NGOM_RT_v18j_chk.grd 2051346 implicit Powell 0.002 0.0 off 0.230000 navd 0.02 all 1.0 0.1 0.01 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-07 1200 20 95
North Carolina (low res) nc_inundation_v6d_rivers_msl.grd 295328 explicit Garratt 0.0035 0.003 on none msl none none 0.5 0.02 0.02 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-10 1200 20 95
North Carolina (high res) nc_inundation_v9.99a_w_rivers.grd 624782 explicit Garratt 0.0028 0.003 on 0.0 msl none none 0.5 0.1 0.01 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-10 1200 20 95
Delmarva FEMA_R3_20110303_MSL.grd 1875689 explicit Garratt 0.0035 0.003 on none msl none none 1.0 0.1 0.01 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-07 1200 20 95
NY/NJ FEMA_R2_norivers_gcs_mNAVD.grd 604790 implicit Garratt 0.0035 0.003 on none msl none none 1.0 0.1 0.01 m2,s2,n2,k1,k2,o1,q1 1.00E-08 1200 10 95
New England NAC2014_R01_ClosedRivers.grd 3110470 implicit Powell 0.002 0.0 off 0.10900 msl none none ? 0.1 0.01 m2,s2,n2,k1,k2,o1,p1,q1 1.00E-07 n/a n/a n/a

In Tides