4 papers
The return branch of viscous fingers
Francisco Vera
We report a simple experiment of two-dimensional pattern formation in a circular Hele-Shaw cell, showing the appearance of a return branch that is equivalent to the upward-connecti…
Complex patterns and tip effect evolution
Francisco Vera
We studied the formation of complex patterns using a variational principle and a standard energy functional. These patterns evolve by letting the system to search for the optimal c…
Understanding the complex patterns of snow crystals
Francisco Vera
We will show that the complex shapes of snow crystals can be explained from a simple basic mechanism that is also responsible for the appearance of many others structures in nature…
The tortuous behavior of lightning
Francisco Vera
The complex branched structure of lightning induce scientists to think that dielectric breakdown is a very complicated phenomena, we will show that this is not true and that simula…