Turbulentsust

Turbulentsust refers to a proposed regime within turbulent flows characterized by a sustained, irregular transfer of kinetic energy across spatial scales and a non-Gaussian statistics of velocity fluctuations. The term appears in theoretical discussions and some simulation studies as a way to describe deviations from classic Kolmogorov turbulence under certain forcing and boundary conditions.

In turbulentsust regimes, the energy spectrum can show intermittent bursts and a slower or faster approach to inertial-range scaling, depending on forcing coherence and Reynolds number. Structure functions of order p show anomalous scaling exponents and the alignment properties of the velocity field with vorticity are enhanced, suggesting stronger anisotropy or coherent structures persisting over time.

Modeling and analysis: Researchers investigating turbulentsust typically employ large-eddy simulations with dynamic subgrid models that account for intermittency, along with higher-order statistics and multifractal analyses to quantify non-Gaussianity. Some studies use shell models or fractal cascade representations to explore the parameter space where turbulentsust-like behavior emerges.

Notes: Turbulentsust is not an established term in mainstream turbulence theory; it remains a hypothetical descriptor used in specific contexts. There is no universal consensus on its defining criteria.

See also: turbulence, energy cascade, intermittency, non-Gaussian statistics, large-eddy simulation.