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Regarding the expression of normal to a curve of 3D surface.
Posted Nov 24, 2019, 3:54 a.m. EST General, Geometry, Introduction Version 5.4 0 Replies
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Hi All,
I am working with a 3D-Block (Picture attached). Over this 3D block, there is 2D curve PQ, embaded in ZX-plane Now I wish to specify some perticular condition along the normal to the curve PQ in ZX-plane (along the arrows shown in attached pic).
When I try to specify the the normal (nx,ny,nz), comsol calculates the normal along Y Direction. Because Comsol is computing the normal to semi circled surface PQ and not to the curve PQ. Thus resulting the normal along Y-axis Direction and not along the required direction.
Can someone describe how to find the normal direction to curve PQ?
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