scholarly journals Turbulent mixing and beyond: non-equilibrium processes from atomistic to astrophysical scales

2013 ◽  
Vol 371 (1982) ◽  
pp. 20120435 ◽  
Author(s):  
S. I. Abarzhi ◽  
S. Gauthier ◽  
K. R. Sreenivasan
Keyword(s):  
Turbulent Mixing ◽  
Large Scale ◽  
Energy Systems ◽  
Equilibrium Processes ◽  
And Mathematics ◽  
Non Equilibrium

Turbulent mixing is a source of paradigm problems in physics, engineering and mathematics. Beyond this important interdisciplinary role, it has immense consequences for a broad range of applications in astrophysics, geophysics, climate and large-scale energy systems. In two volumes, we summarize and provide a perspective on the topic through some 20 articles focusing on turbulent mixing and beyond. The volumes are grouped, somewhat loosely, into those associated with fundamental aspects of turbulence and those specific to Rayleigh–Taylor turbulent mixing.

scholarly journals Turbulent mixing and beyond: non-equilibrium processes from atomistic to astrophysical scales I

2013 ◽  
Vol 371 (1982) ◽  
pp. 20120436 ◽  
Author(s):  
S. I. Abarzhi ◽  
S. Gauthier ◽  
K. R. Sreenivasan
Keyword(s):  
Present State ◽  
Turbulent Mixing ◽  
Specific Problem ◽  
Equilibrium Dynamics ◽  
Equilibrium Processes ◽  
Turbulence Mixing ◽  
Broad Variety ◽  
The Subject ◽  
Non Equilibrium

In this Introduction, we summarize and provide a perspective on 11 articles on ‘Turbulent mixing and beyond’. The papers represent the broad variety of themes of the subject, and are concerned with fundamental aspects of turbulence, mixing and non-equilibrium dynamics. While each paper deals with a specific problem, the collection gives a panoramic overview of the subject at its present state of understanding.

scholarly journals Turbulent mixing and beyond: non-equilibrium processes from atomistic to astrophysical scales II

2013 ◽  
Vol 371 (2003) ◽  
pp. 20130268 ◽  
Author(s):  
S. I. Abarzhi ◽  
S. Gauthier ◽  
K. R. Sreenivasan
Keyword(s):  
Turbulent Mixing ◽  
Hydrodynamic Instabilities ◽  
Numerical Studies ◽  
Equilibrium Processes ◽  
The Subject ◽  
Non Equilibrium

This Introduction summarizes and provides a perspective on the papers representing one of the key themes of the ‘Turbulent mixing and beyond’ programme—the hydrodynamic instabilities of the Rayleigh–Taylor (RT) and Richtmyer–Meshkov (RM) type and their applications in nature and technology. The collection is intended to present the reader a balanced overview of the theoretical, experimental and numerical studies of the subject and to assess what is firm in our knowledge of the RT and RM turbulent mixing.

Multiplexed Laser Induced Fluorescence and Non-Equilibrium Processes in Arcjets.

1994 ◽  
Author(s):  
Dennis Keefer ◽  
Robert Rhodes ◽  
Trevor Moeller ◽  
David Burtner
Keyword(s):  
Laser Induced Fluorescence ◽  
Equilibrium Processes ◽  
Non Equilibrium

scholarly journals Bridging granularity gaps to decarbonize large‐scale energy systems—The case of power system planning

2021 ◽  
Author(s):  
Karl‐Kiên Cao ◽  
Jannik Haas ◽  
Evelyn Sperber ◽  
Shima Sasanpour ◽  
Seyedfarzad Sarfarazi ◽  
...  
Keyword(s):  
Power System ◽  
Large Scale ◽  
Energy Systems ◽  
Power System Planning ◽  
System Planning

Large-scale optimal integration of wind and solar photovoltaic power in water-energy systems on islands

2021 ◽  
Vol 235 ◽  
pp. 113982
Author(s):  
Pedro Cabrera ◽  
José Antonio Carta ◽  
Henrik Lund ◽  
Jakob Zinck Thellufsen
Keyword(s):  
Large Scale ◽  
Energy Systems ◽  
Solar Photovoltaic ◽  
Photovoltaic Power ◽  
Optimal Integration

Flow Geometry Effects on the Turbulent Mixing Efficiency

2006 ◽  
Vol 128 (4) ◽  
pp. 874-879 ◽  
Author(s):  
Roberto C. Aguirre ◽  
Jennifer C. Nathman ◽  
Haris C. Catrakis
Keyword(s):  
Shear Layer ◽  
Turbulent Mixing ◽  
Large Scale ◽  
Mixture Fraction ◽  
Mixing Efficiency ◽  
Developed Turbulence ◽  
Planar Shear ◽  
Flow Geometry ◽  
Schmidt Numbers ◽  
Geometry Effects

Flow geometry effects are examined on the turbulent mixing efficiency quantified as the mixture fraction. Two different flow geometries are compared at similar Reynolds numbers, Schmidt numbers, and growth rates, with fully developed turbulence conditions. The two geometries are the round jet and the single-stream planar shear layer. At the flow conditions examined, the jet exhibits an ensemble-averaged mixing efficiency which is approximately double the value for the shear layer. This substantial difference is explained fluid mechanically in terms of the distinct large-scale entrainment and mixing-initiation environments and is therefore directly due to flow geometry effects.

LESbrary: A library of large eddy simulation data for the calibration and uncertainty quantification of ocean surface boundary layer turbulence parameterizations

2021 ◽  
Author(s):  
Gregory Wagner ◽  
Andre Souza ◽  
Adeline Hillier ◽  
Ali Ramadhan ◽  
Raffaele Ferrari
Keyword(s):  
Boundary Layer ◽  
Turbulent Mixing ◽  
Large Scale ◽  
Ocean Surface ◽  
Limited Area ◽  
Surface Boundary ◽  
Model Errors ◽  
Surface Boundary Layer ◽  
Large Eddy ◽  
Free Parameters

<p>Parameterizations of turbulent mixing in the ocean surface boundary layer (OSBL) are key Earth System Model (ESM) components that modulate the communication of heat and carbon between the atmosphere and ocean interior. OSBL turbulence parameterizations are formulated in terms of unknown free parameters estimated from observational or synthetic data. In this work we describe the development and use of a synthetic dataset called the “LESbrary” generated by a large number of idealized, high-fidelity, limited-area large eddy simulations (LES) of OSBL turbulent mixing. We describe how the LESbrary design leverages a detailed understanding of OSBL conditions derived from observations and large scale models to span the range of realistically diverse physical scenarios. The result is a diverse library of well-characterized “synthetic observations” that can be readily assimilated for the calibration of realistic OSBL parameterizations in isolation from other ESM model components. We apply LESbrary data to calibrate free parameters, develop prior estimates of parameter uncertainty, and evaluate model errors in two OSBL parameterizations for use in predictive ESMs.</p>

Additional Non Equilibrium Processes in the Dynamic Interaction between Flux Quanta and Defects

2006 ◽  
Author(s):  
S. Pace ◽  
G. Filatrella ◽  
G. Grimaldi ◽  
A. Nigro ◽  
M. G. Adesso
Keyword(s):  
Dynamic Interaction ◽  
Equilibrium Processes ◽  
Non Equilibrium

Self-Organisation of the Heat Resistant Steel Structure Following Dynamic Non-Equilibrium Processes

2015 ◽  
Vol 220-221 ◽  
pp. 917-921 ◽  
Author(s):  
Mykola Chausov ◽  
Pavlo Maruschak ◽  
Olegas Prentkovskis ◽  
Andriy Pylypenko ◽  
Valentyn Berezin ◽  
...  
Keyword(s):  
Dissipative Structure ◽  
Steel Structure ◽  
Image Correlation ◽  
Experimental Methodology ◽  
Resistant Steel ◽  
Heat Resistant Steel ◽  
Heat Resistant ◽  
Equilibrium Processes ◽  
Equilibrium Process ◽  
Non Equilibrium

Using an original experimental methodology and software for contactless investigation into strains applying the method of digital image correlation, conditions for DNP realization in the test setup with pre-set rigidity have been found. Strain velocities have been determined to be equal to 2...10 s–1 in the processes of forming and developing a dissipative structure of heat resistant steel under the DNP (dynamic non-equilibrium process).

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