Numerical investigation of vortex dynamics in near wake of a hovering hawkmoth and hovering aerodynamics is conducted with a biology-inspired dynamic flight simulator. This simulator is developed to be capable of ‘flying’ an insect on a basis of realistic wing-body morphologies and kinematics. The computed results show a three-dimensional mechanism of vortical structures in hawkmoth hovering. A...

Abstract

We predict new generic types of vorticity-carrying soliton complexes in a class of physical systems including an attractive Bose-Einstein condensate in a square optical lattice (OL) and photonic lattices in photorefractive media. The patterns include ring-shaped higher-order vortex solitons and supervortices. Stability diagrams for these patterns, based on direct simulations, are presented. The...