MantisBT - VTK
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ID	Project	Category	View Status	Date Submitted	Last Update
0013455	VTK	(No Category)	public	2012-09-14 04:57	2015-08-26 16:46

Reporter	Simon Triebenbacher
Assigned To	Berk Geveci
Priority	high	Severity	minor	Reproducibility	have not tried
Status	closed	Resolution	fixed
Platform		OS		OS Version
Product Version
Target Version		Fixed in Version
Project	TBD
Type	incorrect functionality

Summary	0013455: vtkCellDerivatives computes wrong results on quadratic quadrilateral cells
Description	When trying to calculate the fluid strain rates on second order quadrilateral elements the PV 3.14.1 ComputeDerivatives filter produced the wrong results. I was able to reproduce the bug with a simple ramp function in y-direction in PV 3.14.1 and PV 3.10.1, c.f. y-Ramp_and_ScalarGradient_X.png and y-Ramp_and_ScalarGradient_X.pvsm in attached zip file. I attached a patch, which fixes the mentioned bug. I did not take care about efficency concerns, however.
Steps To Reproduce
Additional Information
Tags	hackaton
Relationships
Attached Files	vtkpatch_quadratic_quads.zip (268,657) 2012-09-14 04:57 https://www.vtk.org/Bug/file/9278/vtkpatch_quadratic_quads.zip

Issue History
Date Modified	Username	Field	Change
2012-09-14 04:57	Simon Triebenbacher	New Issue
2012-09-14 04:57	Simon Triebenbacher	File Added: vtkpatch_quadratic_quads.zip
2013-06-25 14:15	Dave DeMarle	Note Added: 0031062
2014-10-02 10:10	Berk Geveci	Tag Attached: hackaton
2014-10-02 10:10	Berk Geveci	Assigned To	=> Berk Geveci
2014-10-02 17:19	Berk Geveci	Status	backlog => gerrit review
2015-01-09 13:38	Berk Geveci	Source_changeset_attached	=> VTK master fe3ff3b2
2015-08-26 16:46	Berk Geveci	Status	gerrit review => closed
2015-08-26 16:46	Berk Geveci	Resolution	open => fixed

Notes