bugFreeFEM3D - Bugs: bug #14841, normal vector of surfaces

 
 

bug #14841: normal vector of surfaces

Submitter:  None
Submitted:  Sat 22 Oct 2005 04:51:39 PM UTC
   
 
Category:  Language Severity:  1 - Wish
Item Group:  None Status:  Fixed
Privacy:  Public Assigned to:  delpinux
Open/Closed:  Closed
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Sun 30 Oct 2005 11:32:50 PM UTC, comment #2: 

Normal vector is now accessible from the cvs tree.
To use it, one can access to the components of the normal vector by nx, ny or nz.
This is a standard function that is only valid when a surface is defined (browsed).
Note that checking that the normal is correctly used (within the language) is still to be performed (up to now ff3d exits with an error which is not very precise).
Note also that up to now, the correct orientation of the boundary's normal is not checked, you have to ensure it is correct if you work with unstructured meshes. If you use fictitious domain, the normal can be wrong, but this should be fixed quite soon thanks to the work of Cecile and Pascal.

Stéphane Del Pino <delpinux>
Group administrator
Sat 22 Oct 2005 08:24:27 PM UTC, comment #1: 

This feature is being developed. One can expect it very soon.

Stéphane Del Pino <delpinux>
Group administrator
Sat 22 Oct 2005 04:51:39 PM UTC, original submission:  

There isn’t the function that give the normal vector of a surface.
For example you can’t calculate the drag/lift force about a body in Navier-Stokes simulation.
 

Anonymous

 

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Follow 5 latest changes.

Date Changed by Updated Field Previous Value => Replaced by
2005-10-30 delpinux StatusIn Progress Fixed
    Open/ClosedOpen Closed
2005-10-22 delpinux Severity3 - Normal 1 - Wish
    StatusNone In Progress
    Assigned toNone delpinux

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