37 citations · 101 across the 7 of their papers we have counts for
7 papers
Acoustic resolvent analysis of turbulent jets
B. Bugeat, U. Karban, A. Agarwal +2
We perform a resolvent analysis of a compressible turbulent jet, where the optimisation domain of the response modes is located in the acoustic field, excluding the hydrodynamic re…
Modeling closed-loop control of installation noise using Ginzburg-Landau equation
Ugur Karban, Eduardo Martini, Peter Jordan
Installation noise is a dominant source associated with aircraft jet engines. Recent studies show that linear wavepacket models can be employed for prediction of installation noise…
Modal decomposition of nonlinear interactions in wall turbulence
Ugur Karban, Eduardo Martini, André V. G. Cavalieri +1
Coherent structures are found in many different turbulent flows and are known to drive self-sustaining processes in wall turbulence. Identifying the triadic interactions which gene…
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…
Solutions to aliasing in time-resolved flow data
Ugur Karban, Eduardo Martini, Peter Jordan +2
Avoiding aliasing in time-resolved flow data obtained through high fidelity simulations while keeping the computational and storage costs at acceptable levels is often a challenge.…
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…
Ambiguity in mean-flow-based linear analysis
U. Karban, B. Bugeat, E. Martini +6
Linearisation of the Navier-Stokes equations about the mean of a turbulent flow forms the foundation of popular models for energy amplification and coherent structures, including r…