Orphan elements issue resolved

Both our 2D and 3D mesh generators (Mesh and MetaMesh) must perform a critical task: identifying whether a point is inside complex closed boundaries defined by sets of line and arc vectors. The process is the core for assignment of elements to regions in Mesh. It is used in MetaMesh to assign elements to turnings and […]

Improvements: OmniTrak CircBeam and RectBeam tools

Changes in program capabilities usually occur when I am involved in a consulting project. While working intensively with a program, I invariably find that there is a missing feature or that an existing feature is irritating. Both aspects apply to the CircBeam and RectBeam tools of OmniTrak.

To review, the CircBeam tool creates a particle file (PRT) […]

Updating old TriComp input files

Although our programs include modern interactive dialogs for solution setups, we use the time-honored method of text scripts for program control. The function of the input dialogs is to create the scripts. As we have mentioned in the past, there are several reasons for this approach:

You can directly edit the files to make small changes.
Scripts may […]

Problem STL files

In building three-dimensional finite-element solutions, the eternal hope is the faultless transfer of geometric information from CAD programs. In this scenario, mesh generation is a leisurely activity, simply a matter of clicking a few commands. Unfortunately, reality often intrudes. We live in a world where people can’t even make a universal phone charger, let alone a […]

Electron backscatter at low incident energy

Electron backscatter in an important process in models of high-voltage X-ray sources and collectors for high-power microwave tubes. A GamBet user reported observing backscatter ratios below the expected values. He had made two changes in our standard example of electron backscatter from a gold foil:

Reduction of the incident electron energy by an order of magnitude.
Initiation of […]