99 citations · 404 across the 16 of their papers we have counts for
16 papers
On the preferred flapping motion of round twin jets
Daniel Rodriguez, Michael N. Stavropoulos, Petronio A. S. Nogueira +2
Linear stability theory (LST) is often used to model the large-scale flow structures in the turbulent mixing region and near pressure field of high-speed jets. For perfectly-expand…
An empirical model of noise sources in subsonic jets
Ugur Karban, Benjamin Bugeat, Aaron Towne +3
Modelling the noise emitted by turbulent jets is made difficult by their acoustic inefficiency: only a tiny fraction of the near-field turbulent kinetic energy is propagated to the…
Reflection and transmission of a Kelvin-Helmholtz wave incident on a shock in a jet
Matteo Mancinelli, Eduardo Martini, Vincent Jaunet +3
Screech tones in supersonic jets are underpinned by resonance between downstream-travelling Kelvin-Helmholtz waves and upstream-travelling acoustic waves. Specifically, recent work…
Absolute instability in shock-containing jets
Petrônio A. S. Nogueira, Peter Jordan, Vincent Jaunet +3
We present an analysis of the linear stability characteristics of shock-containing jets. The flow is linearised around a spatially periodic mean, which acts as a surrogate for a me…
Including acoustic modes in the vortex-sheet eigenbasis of a jet
Matteo Mancinelli, Eduardo Martini, Vincent Jaunet +1
Vortex-sheet models of jets are widely used to describe the dynamics of modes, such as the Kelvin-Helmholtz instability and guided acoustic waves. However, it is seldom pointed out…
Self-similar mechanisms in wall turbulence studied using of resolvent analysis
U. Karban, E. Martini, A. V. G. Cavalieri +2
Self-similarity of wall-attached coherent structures in a turbulent channel at is explored by means of resolvent analysis. In this modelling framework, coherent structur…
Resolvent-based modeling of turbulent jet noise
Ethan Pickering, Aaron Towne, Peter Jordan +1
Resolvent analysis has demonstrated encouraging results for modeling coherent structures in jets when compared against their data-educed counterparts from high-fidelity large-eddy…
Wavepacket Modelling of Broadband Shock-Associated Noise in Supersonic Jets
Marcus H. Wong, Peter Jordan, Igor A. Maia +4
We present a two-point model to investigate the underlying source mechanisms for broadband shock-associated noise (BBSAN) in shock-containing supersonic jets. In the model presente…
A complex-valued resonance model for axisymmetric screech tones in supersonic jets
Matteo Mancinelli, Vincent Jaunet, Peter Jordan +1
We model the resonance mechanism underpinning generation of A1 and A2 screech tones in an under-expanded supersonic jet. Starting from the resonance model recently proposed by \cit…
Resolvent-based estimation of turbulent channel flow using wall measurements
Filipe R. Amaral, André V. G. Cavalieri, Eduardo Martini +2
We employ a resolvent-based methodology to estimate velocity and pressure fluctuations within turbulent channel flows at friction Reynolds numbers of approximately 180, 550 and 100…
Closed-loop control of forced turbulent jets
Igor A. Maia, Peter Jordan, André V. G. Cavalieri +2
Closed-loop control of turbulent flows is a challenging problem with important practical and fundamental implications. We perform closed-loop control of forced, turbulent jets base…
Waves in screeching jets
Daniel Edgington-Mitchell, Tianye Wang, Petronio Nogueira +5
The interaction between various wavelike structures in screeching jets is considered via both experimental measurements and linear stability theory. Velocity snapshots of screechin…
Nozzle dynamics and wavepackets in turbulent jets
Oğuzhan Kaplan, Peter Jordan, André Cavalieri +1
We study a turbulent jet issuing from a cylindrical nozzle to characterise coherent structures evolving in the turbulent boundary layer. The analysis is performed using data from a…
Accurate Frequency Domain Identification of ODEs with Arbitrary Signals
Eduardo Martini, André V. G. Cavalieri, Peter Jordan +1
The difficulty in frequency domain identification is that frequency components of arbitrary inputs and outputs are not related by the system's transfer function if signals are wind…
Jet-edge interaction tones
Peter Jordan, Vincent Jaunet, Aaron Towne +4
Motivated by the problem of jet-flap interaction noise, we study the tonal dynamics that occur when a sharp edge is placed in the hydrodynamic nearfield of an isothermal turbulent…
Qualitative dynamics of wavepackets in turbulent jets
Onofrio Semeraro, Francois Lusseyran, Luc Pastur +1
It has long been established that turbulent jets comprise large-scale coherent structures, now more commonly referred to as "wavepackets". These structures exhibit a remarkable spa…