Understanding, modeling and control of the high-speed wall-bounded transition and
turbulence not only receive wide academic interests but also are vitally important for high …

Direct numerical simulations, performed with a high-order spectral-element method, are
used to study coherent structures in turbulent pipe flow at friction Reynolds numbers. The …

In this work, the linear responses of turbulent mean flow to both harmonic and stochastic
forcing are investigated for supersonic channel flow. Well-established universal relations are …

In resolvent analyses of turbulent channel flows it has been common practice to neglect or
model the nonlinear forcing term that forms the input of the resolvent. However, the …

We extend the resolvent-based estimation approach recently introduced by Towne etal.(J.
Fluid Mech., vol. 883, 2020, A17) to obtain optimal, non-causal estimates of time-varying …

The predictions obtained from resolvent analysis with and without an eddy viscosity model
for turbulent channel flow at Re τ= 550 are compared to direct numerical simulation data to …

Self-similarity of wall-attached coherent structures in a turbulent channel at is explored by
means of resolvent analysis. In this modelling framework, coherent structures are …

In the present study an optimisation problem is formulated to determine the forcing of an
eddy-viscosity-based linearised Navier–Stokes model in channel flow at is the friction …

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 far field as …

Turbulent channel flow was analysed using direct numerical simulations at friction Reynolds
numbers Re τ= 180 and 550. The databases were studied using spectral proper orthogonal …