Katabatic Flow: A Closed-Form Solution with Spatially-Varying Eddy Diffusivities

Mean-field transport equations and energy theorem for plasma edge turbulent transport

This paper establishes a mean-field equation set and an energy theorem to provide a theoretical basis in view of the development of self-consistent, physics-based turbulent transport models for mean-field transport codes. A rigorous averaging procedure ide ...

Cambridge University Press2024

An improved analytical framework for flow prediction inside and downstream of wind farms

Fernando Porté Agel, Marwa Souaiby

This study evaluates available analytical wake models for flow prediction inside and downstream of wind farms of different sizes and layouts using large-eddy simulation (LES), and introduces an enhanced analytical framework. All the tested analytical wake ...

Pergamon-Elsevier Science Ltd2024

Improvements to the dynamic wake meandering model by incorporating the turbulent Schmidt number

Fernando Porté Agel, Peter Andreas Brugger, Corey Dean Markfort

Predictions of the dynamic wake meandering model (DWMM) were compared to flow measurements of a scanning Doppler lidar mounted on the nacelle of a utility-scale wind turbine. We observed that the wake meandering strength of the DWMM agrees better with the ...

2024

The effect of pressure-anisotropy-driven kinetic instabilities on magnetic field amplification in galaxy clusters

Jennifer Waltraud Schober, Yoan Rappaz

Context. The intracluster medium (ICM) is the low-density diffuse gas that fills the space between galaxies within galaxy clusters. It is primarily composed of magnetized plasma, which reaches virial temperatures of up to 10(8) K, probably due to mergers o ...

Edp Sciences S A2024

Anomalous Dissipation and Lack of Selection in the Obukhov-Corrsin Theory of Scalar Turbulence

Maria Colombo, Massimo Sorella

The Obukhov-Corrsin theory of scalar turbulence [21, 54] advances quantitative predictions on passive-scalar advection in a turbulent regime and can be regarded as the analogue for passive scalars of Kolmogorov's K41 theory of fully developed turbulence [4 ...

Springernature2023

Numerical study on the scale effect of tip vortex cavitation induced by incoming velocities and scale ratios

Mohamed Farhat, Huaiyu Cheng, Mohan Xu

Large eddy simulations of tip vortex cavitation (TVC) around an elliptical hydrofoil is performed to study its scale effect. A satisfying agreement is obtained between the numerical and experimental data. It indicates that the scale effect of TVC is remark ...

PERGAMON-ELSEVIER SCIENCE LTD2023

Dissipative magnetic structures and scales in small-scale dynamos

Jennifer Waltraud Schober

Small-scale dynamos play important roles in modern astrophysics, especially on galactic and extragalactic scales. Owing to dynamo action, purely hydrodynamic Kolmogorov turbulence hardly exists and is often replaced by hydromagnetic turbulence. Understandi ...

OXFORD UNIV PRESS2023

The hunt for the Karman 'constant' revisited

Peter Monkewitz

The log law of the wall, joining the inner, near-wall mean velocity profile (MVP) in wall-bounded turbulent flows to the outer region, has been a permanent fixture of turbulence research for over hundred years, but there is still no general agreement on th ...

Cambridge University Press2023

From thin plates to Ahmed bodies: linear and weakly nonlinear stability of rectangular prisms

Edouard Boujo, Giuseppe Antonio Zampogna

We study the stability of laminar wakes past three-dimensional rectangular prisms. The width-to-height ratio is set to W/H = 1.2, while the length-to-height ratio 1/6 < L/H < 3 covers a wide range of geometries from thin plates to elongated Ahmed bodies. F ...

Cambridge University Press2023

Katabatic Flow: A Closed-Form Solution with Spatially-Varying Eddy Diffusivities

Mean-field transport equations and energy theorem for plasma edge turbulent transport

An improved analytical framework for flow prediction inside and downstream of wind farms

Improvements to the dynamic wake meandering model by incorporating the turbulent Schmidt number

The effect of pressure-anisotropy-driven kinetic instabilities on magnetic field amplification in galaxy clusters

Laterally unconfined neutral or negative buoyancy inflow into a quiescent ambient over sloping bottom

Anomalous Dissipation and Lack of Selection in the Obukhov-Corrsin Theory of Scalar Turbulence

Numerical study on the scale effect of tip vortex cavitation induced by incoming velocities and scale ratios

Dissipative magnetic structures and scales in small-scale dynamos

The hunt for the Karman 'constant' revisited

From thin plates to Ahmed bodies: linear and weakly nonlinear stability of rectangular prisms

Graph Chatbot

Mean-field transport equations and energy theorem for plasma edge turbulent transport

An improved analytical framework for flow prediction inside and downstream of wind farms

Improvements to the dynamic wake meandering model by incorporating the turbulent Schmidt number

The effect of pressure-anisotropy-driven kinetic instabilities on magnetic field amplification in galaxy clusters

Laterally unconfined neutral or negative buoyancy inflow into a quiescent ambient over sloping bottom

Anomalous Dissipation and Lack of Selection in the Obukhov-Corrsin Theory of Scalar Turbulence

Numerical study on the scale effect of tip vortex cavitation induced by incoming velocities and scale ratios

Dissipative magnetic structures and scales in small-scale dynamos

The hunt for the Karman 'constant' revisited

From thin plates to Ahmed bodies: linear and weakly nonlinear stability of rectangular prisms