Determining a geometric boundary for a mass flow, for an energy flow, or for a force flow through a channel having a channel wall

A computer-implemented method for determining a geometric boundary for a mass flow, for an energy flow, or for a flow of force through a channel having a channel wall, the method comprising:

• receiving or presenting coordinates of first edge points of a first edge line of a cross-sectional area of the channel, with the edge points being located on the channel wall;
• receiving or creating, based on the first edge points, a first cross-sectional area as an area of tessellation with a gap-free and overlap-free arrangement of polygonal plane tiles of the area of tessellation, the first edge points being corner points of tiles of the area of tessellation, and the first edge points and all further, inner corner points of the tiles defining the first cross-sectional area;
• determining further cross-sectional areas by iteration as areas of tessellation with the gap-free and overlap-free arrangement of the polygonal plane tiles;
• varying a position of both edge points and inner corner points during the iteration;
• terminating the iteration when a specified termination criterion is met;
• and
• outputting information about a smallest cross-sectional area for which, with regards to the areas of tessellation from the iteration, an overall area of all tiles of a respective area of tessellation is minimized.