Results 31 to 40 of about 28,275 (194)

Numerical simulation of flow separation over a backward-facing step with high Reynolds number

open access: yesWater Science and Engineering, 2019
Large eddy simulation (LES) explicitly calculates the large-scale vortex field and parameterizes the small-scale vortices. In this study, LES and κ-ε models were developed for a specific geometrical configuration of backward-facing step (BFS).
Fang-fang Wang   +2 more
doaj   +1 more source

Radiative Heat Transfer Analysis in a Turbulent Natural Convection Obtained from Direct Numerical Simulation

open access: yesJournal of Thermal Science and Technology, 2011
Thermal radiation in a turbulent natural convection plays an important role in a wide area of engineering and nature. The purposes of this study are to investigate the effects of turbulent fluctuation on radiative heat transfer, and to evaluate radiative
Atsushi SAKURAI   +3 more
doaj   +1 more source

Evaluation of Recirculation Time in Bubble Train Flow by Using Direct Numerical Simulation [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2016
In this research, hydrodynamics of teh Bubble Train Flows (BTF) in circular capillaries TEMPhas been investigated by Direct Numerical Simulation (DNS).Teh Volume of Fluid Based (VOF) interface tracking method and streamwise direction periodic boundary ...
Amin Hassanvand   +1 more
doaj  

Physics-informed reduced-order learning from the first principles for simulation of quantum nanostructures

open access: yesScientific Reports, 2023
Multi-dimensional direct numerical simulation (DNS) of the Schrödinger equation is needed for design and analysis of quantum nanostructures that offer numerous applications in biology, medicine, materials, electronic/photonic devices, etc. In large-scale
Martin Veresko, Ming-Cheng Cheng
doaj   +1 more source

Low Reynolds number k-? modeling by using the direct numerical simulation (DNS) data

open access: yesمجلة علوم ذي قار, 2019
The constant C and the near-wall damping function f in the eddyviscosityrelation of the k-? model are evaluated from direct numerical simulation (DNS) data for developed channel and boundary-layer flow, eachat two Reynolds numbers. Various existing f
Ahmed Abdul-Hussein
doaj   +2 more sources

Direct numerical simulation of matrix diffusion across fracture/matrix interface

open access: yesWater Science and Engineering, 2013
Accurate descriptions of matrix diffusion across the fracture/matrix interface are critical to assessing contaminant migration in fractured media. The classical transfer probability method is only applicable for relatively large diffusion coefficients ...
Yong Zhang   +3 more
doaj   +1 more source

The Barrel of Ilmenau: A large-scale convection experiment to study dust devil-like flow structures.

open access: yesMeteorologische Zeitschrift, 2021
We present an experimental facility for the validation of numerical simulations on atmospheric dust devils in a controlled laboratory experiment. Dust devils are atmospheric air vortices with a vertical axis, and are formed by intense solar radiation and
Alice Loesch, Ronald du Puits
doaj   +1 more source

Scalability of Nek5000 on High-Performance Computing Clusters Toward Direct Numerical Simulation of Molten Pool Convection

open access: yesFrontiers in Energy Research, 2022
In a postulated severe accident, a molten pool with decay heat can form in the lower head of a reactor pressure vessel, threatening the vessel’s structural integrity.
Boshen Bian   +2 more
doaj   +1 more source

Influence of small wavy roughness on flatplate boundary layer natural transition

open access: yesJournal of Fluid Science and Technology, 2021
One of the effective ways to reduce viscous drag around an airfoil is by delaying the boundary layer transition. In this study, we analyzed the influence of a small wavy roughness on a two-dimensional, natural boundary layer transition, using direct ...
Hiroki TAMEIKE   +2 more
doaj   +1 more source

Direct Numerical Simulation of turbulent Taylor-Couette flow

open access: yes, 2007
The direct numerical simulation (DNS) of the Taylor--Couette flow in the fully turbulent regime is described. The numerical method extends the work by Quadrio & Luchini (Eur. J. Mech.
Andereck   +34 more
core   +1 more source

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