Three-dimensional vortex-method simulations are made of a round jet forced by axisymmet-ric, helical and multiple disturbances. The multiple disturbances are combinations of two helical modes rotating in the opposite direction. The present simulations demonstrate the evolution of large-scale vortex structures in the forced jet. Results of the simulations are in reasonable agreement with availab...

We apply the method of Higgs branch localization to the N = 1 supersymmetric partition function on S3 × S1. As a result, we show that it can be written as the product of an elliptic vortex and anti-vortex partition function summed over a finite number of Higgs vacua.

Parallel discrete vortex methods are ideally suited for studying the behaviour of bluff body wakes due to their ability to capture the motion of vortex structures and lack of downstream grid boundaries. However, the availability of suitable parallel computers to run long simulations is always an issue. The convergence of the high-end workstation and commodity PC markets means that it is now pos...

Context. As a universally accepted definition of vortex has not yet been established, the community lacks an unambiguous and rigorous method for identifying vortices in fluid flows. Such would be useful conducting robust statistical studies on highly dynamical turbulent systems such as solar atmosphere. Aims. We aim to develop innovative automated methodology identification based local global c...