Abstract
We consider a hyperbolic free boundary problem by means of min- imizing time discretized functionals of Crank-Nicolson type. The feature of this functional is that it enjoys energy conservation in the absence of free bound- aries, which is an essential property for numerical calculations. The existence and regularity of minimizers is shown and an energy estimate is derived. These results are then used to show the existence of a weak solution to the free bound- ary problem in the 1-dimensional setting.
Original language | English |
---|---|
Pages (from-to) | 2661-2681 |
Number of pages | 21 |
Journal | Discrete and Continuous Dynamical Systems - Series B |
Volume | 27 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 2022 |
Keywords
- Crank-Nicolson type functional
- discrete Morse flow
- energy conservation
- Hyperbolic free boundary problem
- variational method