Spatio-temporal fluctuations of interscale and interspace energy transfer dynamics in homogeneous turbulence

HS Larssen, JC Vassilicos - Journal of Fluid Mechanics, 2023 - cambridge.org
We study fluctuations of all co-existing energy exchange/transfer/transport processes in
stationary periodic turbulence including those that average to zero and are not present in …

Spatio-temporal intermittency of the turbulent energy cascade

T Yasuda, JC Vassilicos - Journal of Fluid Mechanics, 2018 - cambridge.org
In incompressible and periodic statistically stationary turbulence, exchanges of turbulent
energy across scales and space are characterised by very intense and intermittent spatio …

Sudden relaminarization and lifetimes in forced isotropic turbulence

MF Linkmann, A Morozov - Physical Review Letters, 2015 - APS
We demonstrate an unexpected connection between isotropic turbulence and wall-bounded
shear flows. We perform direct numerical simulations of isotropic turbulence forced at large …

Turbulent energy transfers in physical and scale spaces at dissipative length scales

HS Larssen, JC Vassilicos - Journal of Fluid Mechanics, 2023 - cambridge.org
In statistically stationary homogeneous incompressible turbulence, the average energy
transfer rate balance which exists at diffusion/dissipation-dominated length scales does not …

Reynolds-number dependence of the dimensionless dissipation rate in homogeneous magnetohydrodynamic turbulence

M Linkmann, A Berera, EE Goldstraw - Physical Review E, 2017 - APS
This paper examines the behavior of the dimensionless dissipation rate C ɛ for stationary
and nonstationary magnetohydrodynamic (MHD) turbulence in the presence of external …

Onset criteria for freely decaying isotropic turbulence

SR Yoffe, WD McComb - Physical Review Fluids, 2018 - APS
From direct numerical simulation (DNS) of turbulence decaying from specified initial
conditions for the range of initial Taylor-Reynolds numbers 2.58≤ R λ (0)≤ 358.6, it was …

Comparison of forcing functions in magnetohydrodynamics

ME McKay, M Linkmann, D Clark, AA Chalupa… - Physical Review …, 2017 - APS
Results are presented of direct numerical simulations of incompressible, homogeneous
magnetohydrodynamic turbulence without a mean magnetic field, subject to different …

Saturation of exponents and the asymptotic fourth state of turbulence

KR Sreenivasan, V Yakhot, I Staroselsky, H Chen - Physical Review Research, 2024 - APS
A recent discovery about the inertial range of homogeneous and isotropic turbulence is the
saturation of the scaling exponents ζ n for large n, defined via structure functions of order n …

Noisy transitional flows in imperfect channels

C Lissandrello, L Li, KL Ekinci… - Journal of Fluid Mechanics, 2015 - cambridge.org
Here, we study noisy transitional flows in imperfect millimetre-scale channels. For probing
the flows, we use microcantilever sensors embedded in the channel walls. We perform …

Self-organisation processes in (magneto) hydrodynamic turbulence

MFL Linkmann - 2016 - era.ed.ac.uk
Self-organising processes occurring in isotropic turbulence and homogeneous
magnetohydrodynamic (MHD) turbulence are investigated in relation to the stability of …