Gerris - Recent changes [en]

Object hierarchy

2010-01-04T20:01:45Z

/* Tide */

Revision as of 20:01, 4 January 2010		Current revision
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	=== Tide ===		=== Tide ===
		+
		+
		+	*Check this out.. Best site for quality [http://www.bestessays.com/ paper writing service], term paper, research paper, course work, book report and resume writing. All writing services are guaranteed written by professional writers.

Bibliography

2010-01-03T17:03:07Z

/* Gerris related */

Revision as of 17:03, 3 January 2010		Current revision
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	pages = {5838–5866},		pages = {5838–5866},
	url = {http://gfs.sf.net/papers/tension.pdf}		url = {http://gfs.sf.net/papers/tension.pdf}
		+	}
		+	</bibtex>
		+
		+	<bibtex>
		+	@Article{afkhami2009a,
		+	author = {S. Afkhami and S. Zaleski and M. Bussmann},
		+	title = {A mesh-dependent model for applying dynamic contact angles to VOF simulations},
		+	journal = {Journal of Computational Physics},
		+	year = {2009},
		+	volume = {228},
		+	pages = {5370–5389},
		+	url = {http://web.njit.edu/~shahriar/download/AZB_JCP09.pdf}
		+	}
		+	</bibtex>
		+
		+	<bibtex>
		+	@Article{afkhami2008a,
		+	author = {S. Afkhami and M. Bussmann},
		+	title = {Height functions for applying contact angles to 2D VOF simulations},
		+	journal = {International Journal for Numerical Methods in Fluids},
		+	year = {2008},
		+	volume = {57},
		+	pages = {453–472},
		+	url = {http://web.njit.edu/~shahriar/download/AB_IJNMF08.pdf}
	}		}
	</bibtex>		</bibtex>

Object hierarchy

2009-12-18T09:25:25Z

/* Terrain */

Revision as of 09:25, 18 December 2009		Current revision
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	GModule terrain		GModule terrain

-	and defines the [[GfsRefineTerrain]] and [[GfsTerrain]] objects with the following inheritance hierarchy	+	and defines the [[GfsRefineTerrain]], [[GfsTerrain]] and [[GfsVariableTerrain]] objects with the following inheritance hierarchy

	* [[GfsRefine]]		* [[GfsRefine]]
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	** '''[[GfsVariableTerrain]]''' — Defines a variable containing the terrain height		** '''[[GfsVariableTerrain]]''' — Defines a variable containing the terrain height

-	Real terrains are often defined in a geographic coordinate system (e.g. longitude, latitude and height) and in practice this module is often combined with the Map module.	+	Real terrains are often defined in a geographic coordinate system (e.g. longitude, latitude and height) and in practice this module is often combined with the [[Object_hierarchy#Map\|Map]] module.

	The terrain databases used by [[GfsRefineTerrain]] need to be created in a pre-processing step using the [[xyz2rsurface]] command-line utility.		The terrain databases used by [[GfsRefineTerrain]] need to be created in a pre-processing step using the [[xyz2rsurface]] command-line utility.

GfsFunction

2009-12-17T03:36:49Z

/* Cartesian Grid Data (CGD) files */

Revision as of 03:36, 17 December 2009		Current revision
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	The following 3 lines contain the space-separated values defining the positions of each Cartesian grid line in each of the dimensions. Note that these coordinates need to be in increasing order.		The following 3 lines contain the space-separated values defining the positions of each Cartesian grid line in each of the dimensions. Note that these coordinates need to be in increasing order.

-	The rest of the file contains the values at each grid point.	+	The rest of the file contains the values at each grid point in "C-array order", i.e., with the rightmost dimension varying fastest.

	The value of the function at a given (x,y,t) coordinate is then calculated by tri-linear interpolation on the Cartesian grid.		The value of the function at a given (x,y,t) coordinate is then calculated by tri-linear interpolation on the Cartesian grid.

Object hierarchy

2009-12-17T00:06:22Z

/* Solvers */ added description for GfsWave

Revision as of 00:06, 17 December 2009		Current revision
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	** '''[[GfsAdvection]]'''		** '''[[GfsAdvection]]'''
	** '''[[GfsPoisson]]'''		** '''[[GfsPoisson]]'''
-	** '''[[GfsWave]]'''	+	** '''[[GfsWave]]''' — Spectral wave model
	** '''[[GfsRiver]]''' — Solves the Saint-Venant equations		** '''[[GfsRiver]]''' — Solves the Saint-Venant equations

GfsWave

2009-12-16T22:58:09Z

Revision as of 22:58, 16 December 2009		Current revision
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		+	GfsWave is a spectral wave model. See for example Hasselman et al, 1988 and Popinet et al, 2009.
		+
		+	The "wave action" spectrum is discretised in frequency and direction space at each spatial position (two dimensions). The number of frequency and direction "bins" is controlled by the <code>nk</code> and <code>ntheta</code> parameters. The default is 25 frequency bins and 24 direction bins. GfsWave then defines <code>ntheta x nk</code> variables storing the "action density" for each of the direction and frequency bins. These variables are named something like <code>F1_10</code> where the first number is the index of the frequency bin and the second the index of the direction bin.
		+
		+	In practice these variables are not used directly. GfsWave defines several derived variables:
		+
		+	;<code>Hs</code>: the significant wave height,
		+	;<code>Energy</code>: the wave energy.
		+
		+	The wave spectrum can be initialised with [[GfsInitWave]].
		+
		+	The physical units are chosen through the value of the acceleration of gravity (which can be changed with [[GfsPhysicalParams]]). By default the value of the acceleration of gravity is set to <code>9.81/1000.*3600.</code> so that length units are kilometers and time units hours.
		+
		+	The syntax in parameter files is:
		+
		+	[ [[GfsSimulation]] ] {
		+	nk = 25
		+	ntheta = 24
		+	alpha_s = 0
		+	}
		+
		+	where <code>nk</code> and <code>ntheta</code> are the number of frequency and direction bins respectively and <code>alpha_s</code> controls the filtering strength of the "Garden Sprinkler Alleviation" spatial filtering scheme (see Popinet et al, 2009).
		+
		+	By default GfsWave does not include any source terms in the spectral wave evolution equation. Complex source terms can be added with the [[Object_hierarchy#Wavewatch\|wavewatch]] module.
		+
		+	=== References ===
		+
		+	<bibtex>
		+	@article{wamdig1988,
		+	author = {Hasselmann, S. and Hasselmann, K. and Bauer, E. and
		+	Bertotti, L. and Cardone, C. V. and Ewing, J. A. and
		+	Greenwood, J. A. and Guillaume, A. and Janssen, P. A. E. M. and Komen, G. J. and Lionello, P. and Reistad, M. and Zambresky, L.},
		+	title = {The WAM Model - a third generation ocean wave prediction model},
		+	journal = {Journal of Physical Oceanography},
		+	volume = {18},
		+	number = {12},
		+	pages = {1775-1810},
		+	year = {1988}
		+	}
		+	</bibtex>
		+
		+	<bibtex>
		+	@Article{popinet2009b,
		+	author = {S. Popinet and R. M. Gorman and G. J. Rickard and H. L. Tolman},
		+	title = {A quadtree-adaptive spectral wave model},
		+	journal = {Ocean Modelling},
		+	year = {2009}
		+	}
		+	</bibtex>
		+
	<examples/>		<examples/>

Object hierarchy

2009-12-15T08:34:54Z

/* Various events */

Revision as of 08:34, 15 December 2009		Current revision
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	** '''[[GfsRemovePonds]]''' — Controlling the domain topology		** '''[[GfsRemovePonds]]''' — Controlling the domain topology
	** '''[[GfsEventFilter]]''' — Exponential filtering of variables		** '''[[GfsEventFilter]]''' — Exponential filtering of variables
		+	** '''[[GfsEventList]]''' — A List of events

	=== Source terms ===		=== Source terms ===

Object hierarchy

2009-12-14T21:42:19Z

Removed obsolete "Lagrangian" module

Revision as of 21:42, 14 December 2009		Current revision
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	=== Tide ===		=== Tide ===
-
-	=== Lagrangian ===
-
-	GModule lagrangian
-
-	* [[GfsEvent]]
-	** '''[[GfsLagrangianParticles]]''' — Creates Lagrangian particles moving under fluid forces, namely, drag, lift, inertial, added mass force(AMF) and external forces.

Bibliography

2009-12-09T20:16:31Z

/* Gerris related */ updated FDR references

Revision as of 20:16, 9 December 2009		Current revision
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	journal = {Fluid dynamics research},		journal = {Fluid dynamics research},
	year = {2009},		year = {2009},
		+	volume = {41},
		+	pages = {065001},
	url = {http://gfs.sf.net/papers/FDR.pdf}		url = {http://gfs.sf.net/papers/FDR.pdf}
	}		}

User:Popinet

2009-12-07T20:38:57Z

/* Published papers */

Revision as of 20:38, 7 December 2009		Current revision
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	journal = {Fluid dynamics research},		journal = {Fluid dynamics research},
	year = {2009},		year = {2009},
		+	volume = {41},
		+	pages = {065001},
	url = {http://gfs.sf.net/papers/FDR.pdf}		url = {http://gfs.sf.net/papers/FDR.pdf}
	}		}