☆ 4.7 Article

Thermal large-eddy simulation methods to model highly anisothermal and turbulent flows

PHYSICS OF FLUIDS (2023)

Related references

Note: Only part of the references are listed.

Article Thermodynamics

Study of asymmetrically heated flows passing through gas-pressurized solar receivers using Direct Numerical Simulations

Martin David et al.

Summary: Solar receiver flows with turbulent and asymmetric heating at high temperature levels were investigated using DNS simulations. The coupling between dynamics and temperature was considered in a simplified geometry of a solar receiver. Quantitative and qualitative studies of wall heat flux and wall friction were conducted, revealing a strong coupling between these two quantities. The most probable wall heat fluxes and wall frictions were found to be below the mean values and could be approximated by skewed Gaussian distributions. Certain turbulent structures were found to enhance heat transfer while keeping wall friction relatively low.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2023)

Add to Collection

Article Thermodynamics

Large eddy simulation of three-dimensional hybrid forced-buoyancy convection in channels with a step

Marcello Lappa et al.

Summary: This paper extends previous works on unsteady flow in a channel with a forward or backward-facing step (FFS/BFS) by considering three-dimensional flow and mixed forced-gravitational convection. The governing equations, based on the Boussinesq approximation, are solved using an incompressible flow solver and a large eddy simulation (LES) approach. The study highlights the influence of various parameters on the flow behavior and reveals important differences between two-dimensional and three-dimensional simulations.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2023)

Add to Collection

Article Thermodynamics

Numerical development of heat transfer correlation in asymmetrically heated turbulent channel flow

Martin David et al.

Summary: This study focuses on forced convective heat transfer in tubes and channels, proposing a new correlation for symmetrically and asymmetrically heated channels using Large Eddy Simulations. The comparison with three correlations from literature shows the proposed correlation provides more accurate heat transfer results on both the hot and cold sides of the channels.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

Add to Collection

Article Thermodynamics

Asymmetric reverse transition phenomenon in internal turbulent channel flows due to temperature gradients

Sylvain Serra et al.

Summary: The phenomenon of laminarization of a turbulent flow due to wall heating has been studied for over 50 years, with recent success in using some Reynolds-averaged Navier-Stokes models to describe the influence of a strong transverse temperature gradient on turbulent flows. Different turbulence models were utilized to analyze reverse transition, with over 800 calculations performed to open room for debate on the possibility for such approaches to correctly reproduce the experimentally observed behavior.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2021)

Add to Collection

Article Nanoscience & Nanotechnology

Mixed modeling for large-eddy simulation: The single-layer and two-layer minimum-dissipation-Bardina models

L. B. Streher et al.

Summary: The study proposes a mathematical basis to mix functional eddy-viscosity models with the structural Bardina model, developing single-layer and two-layer AMD-Bardina models. The mixed models are tested in turbulent channel flows at different Reynolds numbers, showing improved predictions compared to using the AMD and Bardina models alone. The results obtained with the two-layer AMD-Bardina model are particularly promising, accurately predicting both first- and second-order statistics in wall-bounded turbulent flows at moderate and high Reynolds numbers.

AIP ADVANCES (2021)

Add to Collection

Article Mathematics, Applied

Rayleigh-Taylor and Richtmyer-Meshkov instabilities: A journey through scales

Ye Zhou et al.

Summary: Hydrodynamic instabilities such as Rayleigh-Taylor and Richtmyer-Meshkov instabilities are often found in conjunction with Kelvin-Helmholtz instability in natural phenomena and engineering applications, resulting in turbulent mixing and significant impact on flow development and material properties. These instabilities pose challenges to numerical modeling due to the sharp interface separating fluids, with recent progress made in addressing these challenges. Applications of these instabilities include solar prominences, supernovae, inertial fusion experiments, and scramjets.

PHYSICA D-NONLINEAR PHENOMENA (2021)

Add to Collection

Article Mechanics

Investigation of thermal large-eddy simulation approaches in a highly turbulent channel flow submitted to strong asymmetric heating

M. David et al.

Summary: This study investigates thermal large-eddy simulation (T-LES) of anisothermal turbulent channel flow in concentrated solar power tower conditions, focusing on different subgrid scale models and solution schemes affecting wall heat flux estimation and velocity peak accuracy.

PHYSICS OF FLUIDS (2021)

Add to Collection

Article Mechanics

Explicit wall models for large eddy simulation

Shang-Gui Cai et al.

Summary: Algebraic explicit wall models are proposed to cover the entire inner region of the turbulent boundary layer, reducing the computational effort for large eddy simulation of wall-bounded turbulent flows. The models use closed-form formulas with logarithmic- or power-function-based laws of the wall to straightforwardly evaluate the friction velocity on near wall grids, demonstrating good performance in wall modeled large eddy simulation of turbulent plane channel flow.

PHYSICS OF FLUIDS (2021)

Add to Collection

Article Thermodynamics

Impact of asymmetrical heating on the uncertainty propagation of flow parameters on wall heat transfers in solar receivers

Martin David et al.

Summary: This study investigates the impact of flow parameter uncertainties on wall heat flux in non-isothermal turbulent channel flow and analyzes the effects of wall and bulk temperatures on heat flux estimation. The results show a dependence of high heat flux estimation on temperature variations, highlighting the necessity of accurate measurements.

APPLIED THERMAL ENGINEERING (2021)

Add to Collection

Article Mechanics

Direct simulations and subgrid modeling of turbulent channel flows asymmetrically heated from both walls

M. David et al.

Summary: The study focuses on thermal large-eddy simulations and a direct numerical simulation in a bi-periodical channel with hot and cold wall temperatures, characteristic of a gas-pressurized solar receiver of a solar power tower. The research analyzes the results of 17 simulations on first- and second-order statistics, revealing better prediction accuracy for first-order statistics. The tensorial AMD model is identified as the most reliable and efficient among the considered models.

PHYSICS OF FLUIDS (2021)

Add to Collection

Review Physics, Multidisciplinary

Turbulence theories and statistical closure approaches

Ye Zhou

Summary: Turbulence research plays a crucial role in physics and science. Despite significant advancements in turbulence theory, analytical treatments are limited by mathematical complexities. The development of computational abilities and experimental facilities provides new opportunities for further research on turbulence.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2021)

Add to Collection

Article Thermodynamics

On the applicability of Stokes' hypothesis to low-Mach-number flows

Miltiadis Papalexandris

CONTINUUM MECHANICS AND THERMODYNAMICS (2020)

Add to Collection

Article Mechanics

Temporal large-eddy simulation based on direct deconvolution

Daniel Oberle et al.

PHYSICS OF FLUIDS (2020)

Add to Collection

Review Thermodynamics

High-temperature, point-focus, pressurised gas-phase solar receivers: A comprehensive review

Mohammadreza Sedighi et al.

ENERGY CONVERSION AND MANAGEMENT (2019)

Add to Collection

Article Mechanics

A posteriori tests of subgrid-scale models in an isothermal turbulent channel flow

D. Dupuy et al.

PHYSICS OF FLUIDS (2019)

Add to Collection

Article Thermodynamics

DNS of turbulent low Mach channel flow under asymmetric high temperature gradient: Effect of thermal boundary condition on turbulence statistics

J. M. Avellaneda et al.

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW (2019)

Add to Collection

Article Mechanics

A posteriori tests of subgrid-scale models in strongly anisothermal turbulent flows

D. Dupuy et al.

PHYSICS OF FLUIDS (2019)

Add to Collection

Article Physics, Fluids & Plasmas

Turbulent mixing and transition criteria of flows induced by hydrodynamic instabilities

Ye Zhou et al.

PHYSICS OF PLASMAS (2019)

Add to Collection

Article Thermodynamics

A priori tests of subgrid-scale models in an anisothermal turbulent channel flow at low mach number

Dorian Dupuy et al.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2019)

Add to Collection

Article Mechanics

Linking dissipation, anisotropy, and intermittency in rotating stratified turbulence at the threshold of linear shear instabilities

A. Pouquet et al.

PHYSICS OF FLUIDS (2019)

Add to Collection

Article Physics, Fluids & Plasmas

Modeling subgrid-scale force and divergence of heat flux of compressible isotropic turbulence by artificial neural network

Chenyue Xie et al.

PHYSICAL REVIEW FLUIDS (2019)

Add to Collection

Article Mechanics

Effect of grid resolution on large eddy simulation of wall-bounded turbulence

S. Rezaeiravesh et al.

PHYSICS OF FLUIDS (2018)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Numerical simulations of unsteady viscous incompressible flows using general pressure equation

Adrien Toutant

JOURNAL OF COMPUTATIONAL PHYSICS (2018)

Add to Collection

Article Mechanics

A priori study of subgrid-scale features in turbulent Rayleigh-Benard convection

F. Dabbagh et al.

PHYSICS OF FLUIDS (2017)

Add to Collection

Review Physics, Multidisciplinary

Rayleigh-Taylor and Richtmyer-Meshkov instability induced flow, turbulence, and mixing. II

Ye Zhou

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2017)

Add to Collection

Review Physics, Multidisciplinary

Rayleigh-Taylor and Richtmyer-Meshkov instability induced flow, turbulence, and mixing. I

Ye Zhou

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2017)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Spectral analysis of turbulence in anisothermal channel flows

Frederic Aulery et al.

COMPUTERS & FLUIDS (2017)

Add to Collection

Article Physics, Fluids & Plasmas

Minimum-dissipation scalar transport model for large-eddy simulation of turbulent flows

Mahdi Abkar et al.

PHYSICAL REVIEW FLUIDS (2016)

Add to Collection

Article Mechanics

Building proper invariants for eddy-viscosity subgrid-scale models

F. X. Trias et al.

PHYSICS OF FLUIDS (2015)

Add to Collection

Article Mechanics

Minimum-dissipation models for large-eddy simulation

Wybe Rozema et al.

PHYSICS OF FLUIDS (2015)

Add to Collection

Article Mechanics

On the influence of outer large-scale structures on near-wall turbulence in channel flow

L. Agostini et al.

PHYSICS OF FLUIDS (2014)

Add to Collection

Article Mechanics

New dynamic subgrid-scale heat flux models for large-eddy simulation of thermal convection based on the general gradient diffusion hypothesis

Bing-Chen Wang et al.

JOURNAL OF FLUID MECHANICS (2008)

Add to Collection

Article Thermodynamics

Numerical studies towards practical large-eddy simulation

J. Boudet et al.

JOURNAL OF THERMAL SCIENCE (2007)

Add to Collection

Article Mechanics

Is plane-channel flow a friendly case for the testing of large-eddy simulation subgrid-scale models?

Johan Meyers et al.

PHYSICS OF FLUIDS (2007)

Add to Collection

Article Multidisciplinary Sciences

Large-scale influences in near-wall turbulence

Nicholas Hutchins et al.

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES (2007)

Add to Collection

Article Mechanics

Scaling of the velocity fluctuations in turbulent channels up to Re-tau=2003

S Hoyas et al.

PHYSICS OF FLUIDS (2006)

Add to Collection

Article Geosciences, Multidisciplinary

The heat flux and the temperature gradient in the lower atmosphere

CW Higgins et al.

GEOPHYSICAL RESEARCH LETTERS (2004)

Add to Collection

Article Thermodynamics

Large eddy simulation of constant heat flux turbulent channel flow with property variations: Quasi-developed model and mean flow results

LD Dalley et al.

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME (2003)

Add to Collection

Article Mathematics, Applied

An object-oriented approach to the design of fluid mechanics software

C Calvin et al.

ESAIM-MATHEMATICAL MODELLING AND NUMERICAL ANALYSIS-MODELISATION MATHEMATIQUE ET ANALYSE NUMERIQUE (2002)

Add to Collection

Article Mechanics

On the comparison of turbulence intensities from large-eddy simulation with those from experiment or direct numerical simulation

GS Winckelmans et al.

PHYSICS OF FLUIDS (2002)

Add to Collection

Article Thermodynamics

On a subgrid-scale heat flux model for large eddy simulation of turbulent thermal flow

SH Peng et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2002)

Add to Collection

Article Mechanics

Explicit-filtering large-eddy simulation using the tensor-diffusivity model supplemented by a dynamic Smagorinsky term

GS Winckelmans et al.

PHYSICS OF FLUIDS (2001)

Add to Collection

Article Mechanics

Subgrid-scale interactions in a numerically simulated planar turbulent jet and implications for modelling

R Akhavan et al.

JOURNAL OF FLUID MECHANICS (2000)

Add to Collection

© Peeref 2019-2024. All rights reserved.