Related Experiment Video
Updated: Jan 27, 2026

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
Published on: February 11, 2014
Minimum enstrophy principle for two-dimensional inviscid flows around obstacles
Abstract:
Large-scale coherent structures emerging in two-dimensional flows can be predicted from statistical physics inspired methods consisting in minimizing the global enstrophy while conserving the total energy and circulation in the Euler equations. In many situations, solid obstacles inside the domain may also constrain the flow and have to be accounted for via a minimum enstrophy principle. In this work, we detail this extended variational formulation and its numerical resolution. It is shown from applications to complex geometries containing multiple circular obstacles that the number of solutions is enhanced, allowing many possibilities of bifurcations for the large-scale structures. These phase change phenomena can explain the downstream recombinations of the flow in rod-bundle experiments and simulations.
More Related Videos
13:56Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
09:43Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat
Published on: December 11, 2017
Related Concept Videos
Hardy-Weinberg Principle
The Uncertainty Principle
The Pauli Exclusion Principle
Le Chatelier's Principle: Changing Concentration
The Aufbau Principle and Hund's Rule
Dimensional Analysis
Conversion Factors and Dimensional Analysis
The unit...