nivåsetmetoden
Nivåsetmetoden, which translates to "level-setting method," is a numerical technique used in computational fluid dynamics (CFD) and other fields involving interface tracking. It is primarily employed to represent and evolve a sharp interface between two or more immiscible fluids or phases. The core idea is to maintain a smooth, continuous function, often called the level-set function, that implicitly defines the interface.
The level-set function, denoted by $\phi$, is defined such that its zero contour ($\phi = 0$) represents
The evolution of the interface over time is governed by the advection of the level-set function. This
A key challenge with the basic level-set method is that the signed distance property can be lost