Typical ADCIRC Parameter Selections - Revision history

Taylorgasher: /* In Tides */ clarified

2020-06-17T15:36:53Z

In Tides: clarified

← Older revision		Revision as of 11:36, 17 June 2020
Line 238:		Line 238:

	== In Tides ==		== In Tides ==
	Many tide models are configured the same as the above surge models, although some users have reported poor tide performance if the minimum bottom drag coefficient is set to zero.		Many tide models are configured the same as the above surge models, although some users have reported poor tide performance if the minimum bottom drag coefficient is set to zero. One explanation of this difference in behavior is that the bottom drag differs between tidal and wind-driven flows. The vertical variation in horizontal flow is not known in a 2D model, making prescription of bottom drag ambiguous because the near-bottom velocity is unknown.

	== Discouraged Parameter Selections ==		== Discouraged Parameter Selections ==

Taylorgasher: Added tide details, clarified table column headers

2020-06-09T18:20:57Z

Added tide details, clarified table column headers

← Older revision		Revision as of 14:20, 9 June 2020
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	== In Storm Surge ==		== 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.		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. Note that in all cases, nodal attributes [[Manning's n at sea floor]] and [[surface directional effective roughness length]] are in use.
	{\| class="wikitable" border="1"		{\| class="wikitable" border="1"
	\|-		\|-
Line 9:		Line 9:
	!np		!np
	!GWCE Formulation		!GWCE Formulation
	!Drag Law		!Wind Drag Law
	!Drag Limit		!Upper Wind Drag Limit
	!~~FFACTOR~~		!Min Bottom Drag Coef
	!Advective Terms		!Advective Terms
	!Steric		!Steric
Line 238:		Line 238:

	== In Tides ==		== In Tides ==
			Many tide models are configured the same as the above surge models, although some users have reported poor tide performance if the minimum bottom drag coefficient is set to zero.

	== Discouraged Parameter Selections ==		== Discouraged Parameter Selections ==

Taylorgasher: Added discouraged parameters

2020-06-09T18:11:14Z

Added discouraged parameters

← Older revision		Revision as of 14:11, 9 June 2020
Line 238:		Line 238:

	== In Tides ==		== In Tides ==

			== Discouraged Parameter Selections ==
			As ADCIRC has grown, some features have been improved upon, making others obsolete. This section addresses such parameters and values.

			<code>[[NWS]]=19</code> should not be used, as <code>NWS=20</code> has the same input requirements but is considered to produce a better, more physically representative wind field.

Taylorgasher: tweak

2019-06-05T13:36:09Z

tweak

← Older revision		Revision as of 09:36, 5 June 2019
Line 1:		Line 1:
	'''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.		'''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 ==

Taylorgasher: Added intro, organized

2019-06-05T13:34:27Z

Added intro, organized

@@ Line 1: / Line 1: @@
 {| class="wikitable" border="1"
 |-
@@ Line 232: / Line 236: @@
 |n/a
 |}

JasonFleming: clarified SWAN columns

2019-06-05T13:00:58Z

clarified SWAN columns

← Older revision		Revision as of 09:00, 5 June 2019
Line 18:		Line 18:
	!tidal constituents		!tidal constituents
	!convcr		!convcr
	!time step		!SWAN time step
	!MXITNS		!SWAN MXITNS
	!NPNTS		!SWAN NPNTS
	\|-		\|-
	\|Louisiana		\|Louisiana

JasonFleming: fixed table formatting

2019-06-05T12:59:51Z

fixed table formatting

← Older revision		Revision as of 08:59, 5 June 2019
Line 1:		Line 1:
	{\| class="wikitable" border="1"		{\| class="wikitable" border="1"
	\|-		\|-
	! ~~header 1~~		!Region
	! ~~header 2~~		!Mesh
	! ~~header 3~~		!np
	\|-		!GWCE Formulation
	~~\| row 1, cell 1~~		!Drag Law
	~~\| row 1, cell 2~~		!Drag Limit
	~~\| row 1, cell 3~~		!FFACTOR
	\|-		!Advective Terms
	~~\| row 2, cell 1~~		!Steric
	~~\| row 2, cell 2~~		!Vert. Datum
	~~\| row 2, cell 3~~		!ESL
	\|}		!ESL Node Count
			!time step
	{\|		!h0
	~~\|Region~~		!velmin
	~~\|Mesh~~		!tidal constituents
	\|np		!convcr
	\|GWCE Formulation		!time step
	\|Drag Law		!MXITNS
	\|Drag Limit		!NPNTS
	\|FFACTOR
	\|Advective Terms
	\|Steric
	\|Vert. Datum
	\|ESL
	\|ESL Node Count
	\|time step
	\|h0
	\|velmin
	\|tidal constituents
	\|convcr
	\|time step
	\|MXITNS
	\|NPNTS
	\|-		\|-
	\|Louisiana		\|Louisiana

JasonFleming: initial parameters table import

2019-06-05T12:56:00Z

initial parameters table import

New page

{| class="wikitable" border="1"
|-
! header 1
! header 2
! header 3
|-
| row 1, cell 1
| row 1, cell 2
| row 1, cell 3
|-
| row 2, cell 1
| row 2, cell 2
| row 2, cell 3
|}

{|
|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
|time step
|MXITNS
|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
|}