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Confirmation of the definition s in dr/ds = -1 in the Geometric Optics node of the Ray Optics module
Posted Dec 13, 2019, 12:10 a.m. EST Ray Optics, Heat Transfer Version 5.4 0 Replies
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Hello, COMSOL Users.
In the Ray Optics module, there are two equations that are 
and 
. I used a 3D model in which rays were released from a grid. May you confirm that "s" is the distance each ray has travelled since it was released?
This information is not clear in the Ray Optics User Guide.
I know that 
and 
are the first and second principal radii of curvature of a wavefront in 3D.
I am trying to prepare a thesis of work that I did using COMSOL Multiphysics 5.4. In that thesis, I would like to mention all of the equations that were used in the simulations, particularly because the work that I did is theoretical.
These are in the "Ray properties" subsection of the attached document. My Geometry was two unit lenses. The photon energy I used was 23 keV, i.e., in the x-ray range.
The COMSOL products that I used were COMSOL Multiphysics with the Heat Transfer and Ray Optics modules. The Multiphysics that was used was the Ray Heat Source Multiphysics. Perhaps you have seen these variables before if you have used these modules.
Sincerely, Kyrollos
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Hello Kyrollos Iskandar
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