An axisymmetric hot-air jet discharging into cold ambient air is investigated experimentally.
We consider the transitional regime, that is, Reynolds numbers at which the jet is initially …

A two-dimensional hot-air jet is investigated experimentally in the transitional regime. The
density effect on the near-field behaviour of the initially laminar jet is explored by flow …

A transitional, heated, axisymmetric air jet is investigated in the regime in which it is self‐
excited and develops a regular sequence of intense vortex ring structures. Seeding of the jet …

This is a brief report on the properties of round jets of different densities issuing into the
ambient air. Different densities were obtained by premixing helium and air in various …

The linear amplification of axisymmetric external forcing in incompressible jet flows is
investigated within a fully non-parallel framework. Experimental and numerical studies have …

The topic of this paper is an experimental investigation of entrainment and mixing in
transitional, ie, initially laminar, axisymmetric jets that are either self‐excited or strongly …

Since the experiments of Monkewitz et al.(J. Fluid Mech. vol. 213, 1990, p. 611), sufficiently
hot circular jets have been known to give rise to self-sustained synchronized oscillations …

A study has been made of the instability and the subsequent breakdown of axisymmetric jets
of helium/air mixtures emerging into ambient air. Although the density of the nozzle gas is …

The mechanisms leading to bifurcating jets are investigated by means of direct numerical
simulation. Two distinct types of jets were obtained by applying a bi-modal perturbation at …

Experiments conducted in axisymmetric low-density jets reveal that the transition to global
instability and the frequency selection of the global mode depend on the operating …