GfsRefineDistance

From Gerris

Revision as of 02:10, 1 July 2008 GeordieMcBain (Talk | contribs) (noted restriction to surfaces given as GTS files) ← Previous diff		Current revision Popinet (Talk | contribs) (examples cross-reference)
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	[ [[GfsRefineSurface]] ]		[ [[GfsRefineSurface]] ]
-	Unlike [[GfsRefineSurface]], GfsRefineDistance only works if the [[GfsSurface|surface]] is given by a GTS file, not implicitly as a level-set.	+	Unlike [[GfsRefineSurface]], GfsRefineDistance only works if the [[GfsSurface|surface]] is given by a GTS file, not implicitly as a level-set; for implicitly defined surfaces one should resort to [[GfsRefine]].
	Example: (from an input file [http://sourceforge.net/mailarchive/message.php?msg_id=8b53ae6f0708281307l3e2b4e39x384806392e3f52e5%40mail.gmail.com|posted posted to Gfs-users mailing list])		Example: (from an input file [http://sourceforge.net/mailarchive/message.php?msg_id=8b53ae6f0708281307l3e2b4e39x384806392e3f52e5%40mail.gmail.com|posted posted to Gfs-users mailing list])
	RefineDistance (6*pow(Distance + 1, -12)+4) ../clarky.gts {tx = -0.145 ty = 0.0259056926297 tz = 0 rx = 0 ry = 0 rz = -7.19 sx = 0.3 sy = 0.3 sz = 0.3}		RefineDistance (6*pow(Distance + 1, -12)+4) ../clarky.gts {tx = -0.145 ty = 0.0259056926297 tz = 0 rx = 0 ry = 0 rz = -7.19 sx = 0.3 sy = 0.3 sz = 0.3}
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		+	<examples/>

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Current revision

For each candidate cell, GfsRefineDistance computes the distance from the cell center to the given surface, stores it in a new variable Distance, and makes it available to the user-defined function which computes the maximum level of refinement allowed.

The syntax in parameter files is

 [ GfsRefineSurface ]

Unlike GfsRefineSurface, GfsRefineDistance only works if the surface is given by a GTS file, not implicitly as a level-set; for implicitly defined surfaces one should resort to GfsRefine.

Example: (from an input file posted to Gfs-users mailing list)

 RefineDistance (6*pow(Distance + 1, -12)+4) ../clarky.gts {tx = -0.145 ty = 0.0259056926297 tz = 0 rx = 0 ry = 0 rz = -7.19 sx = 0.3 sy = 0.3 sz = 0.3}