Control of a Circular Jet
Fluid Dynamics
2010-10-18 v1
Abstract
The present study report direct numerical simulation (DNS) of a circular jet and the effect of a large scale perturbation at the jet inlet. The perturbation is used to control the jet for increased spreading. Dual-mode perturbation is obtained by combining an axisymmetric excitation with the helical. In the fluid dynamics videos, an active control of the circular jet at a Reynolds number of 2000 for various frequency ratios (both integer and non-integer) has been demonstrated. When the frequency ratio is fixed to 2, bifurcation of the jet on a plane is evident. However, for a non-integer frequency ratio, the axisymmetric jet is seen to bloom in all directions.
Keywords
Cite
@article{arxiv.1010.3249,
title = {Control of a Circular Jet},
author = {Trushar B. Gohil and Arun K Saha and K. Muralidhar},
journal= {arXiv preprint arXiv:1010.3249},
year = {2010}
}
Comments
2 pages