Recently, a GamBet user reported calculations where the code violated conservation of energy by several orders of magnitude. This is the type of statement that generally catches my attention, so I decided to investigate the issue. An inspection of his input files showed that he was using a bremsstrahlung forcing factor of 1000. If I were [...]
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Several users have reported intermittent plotting problems when working in Windows 7 with large meshes (i.e., millions of elements) in our 2D and 3D programs. I addressed the problem in a previous blog . In recent tests, I found that the precautions I described in the blog were necessary but not sufficient to ensure reliable plotting. [...] In the distant past, in a time we called the 80s, there was only one input method for technical programs — the script. An input script is a text document with lines to set code options and parameters. Although infinitely superior to a stack of punch cards, people grew to hate them for several reasons: Each program had [...] Some users have reported intermittent plotting problems when working with large meshes (i.e., millions of elements) in the 2D and 3D programs. The reason I didn’t notice anything is that I always try to avoid large meshes. It’s almost always possible to analyze applications to employ symmetry and to eliminate unnecessary details. Furthermore, solutions with a [...] To reduce the possibility of breakdowns, a common goal in high-voltage engineering is to minimize peak electric field values on electrodes for a given voltage. One example is the choice of conductor and shield radii for a coaxial cable. For a given shield radius ro, what choice of the conductor radius ri gives the lowest electric? [...] |
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