Boundary conditions - Revision history

Wpringle: /* Automatic Specific of Boundary Conditions */

2020-01-27T23:05:13Z

Automatic Specific of Boundary Conditions

← Older revision		Revision as of 19:05, 27 January 2020
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	== Automatic Specific of Boundary Conditions ==		== Automatic Specific of Boundary Conditions ==
	The OceanMesh2D<ref>Roberts, K. J., Pringle, W. J., & Westerink, J. J. (2019). OceanMesh2D 1.0: MATLAB-based software for two-dimensional unstructured mesh generation in coastal ocean modeling. Geoscientific Model Development, 12, 1847–1868. https://doi.org/10.5194/gmd-12-1847-2019</ref>[https://github.com/CHLNDDEV/OceanMesh2D (GitHub site)] mesh generation toolbox has the ability to automatically apply the basic no-flux and open ocean elevation boundary conditions for an ADCIRC mesh. See the '''makens''' (make node-string) function using the 'auto' option. Geospatial data is required to automatically detect whether a mesh boundary is located in the ocean (applies open ocean elevation boundary condition) or is along the shoreline/on-land (applies natural no-flux boundary condition).		The OceanMesh2D<ref>Roberts, K. J., Pringle, W. J., & Westerink, J. J. (2019). OceanMesh2D 1.0: MATLAB-based software for two-dimensional unstructured mesh generation in coastal ocean modeling. Geoscientific Model Development, 12, 1847–1868. https://doi.org/10.5194/gmd-12-1847-2019</ref>[https://github.com/CHLNDDEV/OceanMesh2D (GitHub site)] mesh generation toolbox has the ability to automatically apply the basic no-flux and open ocean elevation boundary conditions for an ADCIRC mesh. See the '''makens''' (make node-string) function using the 'auto' option. Geospatial shoreline data is required to automatically detect whether a mesh boundary is located in the ocean (applies open ocean elevation boundary condition) or is along the shoreline/on-land (applies natural no-flux boundary condition).

	The '''makens''' function also contains other options for manually specifying other boundary condition types such as rivers and weirs.		The '''makens''' function also contains other options for manually specifying other boundary condition types such as rivers and weirs.

Wpringle at 23:03, 27 January 2020

2020-01-27T23:03:51Z

← Older revision		Revision as of 19:03, 27 January 2020
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	'''Lateral boundary conditions''' allow one to constrain the physics along boundaries in the model. They are similar to [[initial conditions]], which specify the model state at start time. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Since ADCIRC solves for water elevations and velocities (fluxes), typically one (occasionally both) of these two quantities is constrained at the lateral boundaries.		'''Lateral boundary conditions''' allow one to constrain the physics along boundaries in the model. They are similar to [[initial conditions]], which specify the model state at start time. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Since ADCIRC solves for water elevations and velocities (fluxes), typically one (occasionally both) of these two quantities are constrained at the lateral boundaries.

	== Flux Boundaries ==		== Flux Boundaries ==

Wpringle at 23:03, 27 January 2020

2020-01-27T23:03:40Z

← Older revision		Revision as of 19:03, 27 January 2020
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	'''Lateral boundary conditions''' allow one to constrain the physics along boundaries in the model. They are similar to [[initial conditions]], which specify the model state at start time. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Since ADCIRC solves for water elevations and velocities (fluxes), typically ~~some aspect~~(s) of these two quantities ~~is what~~ is constrained at the lateral boundaries.		'''Lateral boundary conditions''' allow one to constrain the physics along boundaries in the model. They are similar to [[initial conditions]], which specify the model state at start time. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Since ADCIRC solves for water elevations and velocities (fluxes), typically one (occasionally both) of these two quantities is constrained at the lateral boundaries.

	== Flux Boundaries ==		== Flux Boundaries ==

Wpringle at 22:59, 27 January 2020

2020-01-27T22:59:51Z

← Older revision		Revision as of 18:59, 27 January 2020
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	== Elevation Boundaries ==		== Elevation Boundaries ==

			== Automatic Specific of Boundary Conditions ==
			The OceanMesh2D<ref>Roberts, K. J., Pringle, W. J., & Westerink, J. J. (2019). OceanMesh2D 1.0: MATLAB-based software for two-dimensional unstructured mesh generation in coastal ocean modeling. Geoscientific Model Development, 12, 1847–1868. https://doi.org/10.5194/gmd-12-1847-2019</ref>[https://github.com/CHLNDDEV/OceanMesh2D (GitHub site)] mesh generation toolbox has the ability to automatically apply the basic no-flux and open ocean elevation boundary conditions for an ADCIRC mesh. See the '''makens''' (make node-string) function using the 'auto' option. Geospatial data is required to automatically detect whether a mesh boundary is located in the ocean (applies open ocean elevation boundary condition) or is along the shoreline/on-land (applies natural no-flux boundary condition).

			The '''makens''' function also contains other options for manually specifying other boundary condition types such as rivers and weirs.

			== References ==
			<references />

Wpringle: /* Flux Boundaries */

2020-01-27T22:48:34Z

Flux Boundaries

← Older revision		Revision as of 18:48, 27 January 2020
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	== Flux Boundaries ==		== Flux Boundaries ==
	~~For details on~~ flux boundary ~~conditions, see~~ [[flux specified boundaries]].		By default ADCIRC weakly satisfies the no-flux boundary condition at mesh boundaries. See [[flux specified boundaries]] for details on fine-grained specification of the flux boundary conditions if required.

	== Elevation Boundaries ==		== Elevation Boundaries ==

Wpringle at 22:42, 27 January 2020

2020-01-27T22:42:39Z

← Older revision		Revision as of 18:42, 27 January 2020
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	'''~~Boundary~~ conditions''' allow one to constrain the physics along boundaries in the model. They are similar to [[initial conditions]], which specify the model state at start time. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]~~. Note that the sea surface and sea floor (i.e. the top and bottom of the water mass) are also boundaries, though these are not addressed here~~. Since ADCIRC solves for water elevations and velocities (fluxes), typically some aspect(s) of these two quantities is what is constrained ~~in a boundary condition~~.		'''Lateral boundary conditions''' allow one to constrain the physics along boundaries in the model. They are similar to [[initial conditions]], which specify the model state at start time. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Since ADCIRC solves for water elevations and velocities (fluxes), typically some aspect(s) of these two quantities is what is constrained at the lateral boundaries.

	== Flux Boundaries ==		== Flux Boundaries ==

Taylorgasher: linked to init conds.

2019-09-06T16:31:39Z

linked to init conds.

← Older revision		Revision as of 12:31, 6 September 2019
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	'''Boundary conditions''' allow one to constrain the physics along boundaries in the model. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Note that the sea surface and sea floor (i.e. the top and bottom of the water mass) are also boundaries, though these are not addressed here. Since ADCIRC solves for water elevations and velocities (fluxes), typically some aspect(s) of these two quantities is what is constrained in a boundary condition.		'''Boundary conditions''' allow one to constrain the physics along boundaries in the model. They are similar to [[initial conditions]], which specify the model state at start time. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Note that the sea surface and sea floor (i.e. the top and bottom of the water mass) are also boundaries, though these are not addressed here. Since ADCIRC solves for water elevations and velocities (fluxes), typically some aspect(s) of these two quantities is what is constrained in a boundary condition.

	== Flux Boundaries ==		== Flux Boundaries ==

Taylorgasher: Taylorgasher moved page Boundary Conditions to Boundary conditions

2019-09-06T15:48:36Z

Taylorgasher moved page Boundary Conditions to Boundary conditions

← Older revision	Revision as of 11:48, 6 September 2019
(No difference)

Taylorgasher: Created page, added basic info and a note on initial river elevation and sea surface height above geoid

2019-09-06T15:47:33Z

Created page, added basic info and a note on initial river elevation and sea surface height above geoid

New page

'''Boundary conditions''' allow one to constrain the physics along boundaries in the model. As an example, at the walls of a bathtub, the flow normal to the walls is zero since they are impermeable. For general information on the topic, see the [https://en.wikipedia.org/wiki/Boundary_value_problem Wikipedia article]. Note that the sea surface and sea floor (i.e. the top and bottom of the water mass) are also boundaries, though these are not addressed here. Since ADCIRC solves for water elevations and velocities (fluxes), typically some aspect(s) of these two quantities is what is constrained in a boundary condition.

== Flux Boundaries ==
For details on flux boundary conditions, see [[flux specified boundaries]].

== Elevation Boundaries ==