Results 61 to 70 of about 61,345 (281)

Generation of magnetic field by dynamo action in a turbulent flow of liquid sodium [PDF]

open access: yes, 2007
We report the observation of dynamo action in the VKS experiment, i.e., the generation of magnetic field by a strongly turbulent swirling flow of liquid sodium. Both mean and fluctuating parts of the field are studied. The dynamo threshold corresponds to
A. Chiffaudel   +21 more
core   +5 more sources

Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati   +2 more
wiley   +1 more source

Using single-sensor hot-wire anemometry for velocity measurements in confined swirling flows [PDF]

open access: yes, 2018
This short communication presents a novel technique for measuring the velocity of a confined swirling flow using a single-sensor hot-wire probe. Unlike conventional hot-wire techniques, directional calibration of the hot-wire probe is not required.
Aleksandrova, Svetlana   +3 more
core   +1 more source

Nonsilting transport characteristics of coal slurry in a deep underground fluidization conveying pipeline under the action of a guide vane swirler

open access: yesDeep Underground Science and Engineering, EarlyView.
Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao   +5 more
wiley   +1 more source

NUMERICAL CALCULATIONS OF ENERGY CHARACTERISTICS FOR SIMULATION THE STEADY-STATE OUTPUT OF AN ARTIFICIAL TORNADO

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2018
The article deals with the results of numerical experiments simulating various ways of reaching the steadystate regime of an ascending swirling air flow in an artificially created tornado.
R. E. Volkov   +2 more
doaj   +1 more source

Characteristics of inhomogeneous jets in confined swirling air flows [PDF]

open access: yes, 1984
An experimental program to study the characteristics of inhomogeneous jets in confined swirling flows to obtain detailed and accurate data for the evaluation and improvement of turbulent transport modeling for combustor flows is discussed.
Ahmed, S. A., So, R. M. C.
core   +1 more source

Swirling combustor energy converter: H2/air simulations of separated chambers [PDF]

open access: yes, 2015
This work reports results related to the “EU-FP7-HRC-Power” project aiming at developing micro-meso hybrid sources of power. One of the goals of the project is to achieve surface temperatures up to more than 1000 K, with a ΔT ≤ 100 K, in order to be ...
MINOTTI, ANGELO, TEOFILATTO, Paolo
core   +2 more sources

Solar Fuels Via Methane Valorization: Thermochemical Pathways, Unified Metrics, and Techno‐Economic Perspectives

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A first‐of‐its‐kind review benchmarks three solar methane valorization pathways with unified performance metrics for clean fuel production. Meeting global climate targets and sustainable energy demands requires carbon‐neutral fuels and innovative conversion pathways.
Muhammad Abdulmoez   +3 more
wiley   +1 more source

Mixing Behavior of Natural Gas and Hydrogen in a High‐Efficiency Vane (HEV) Static Mixer

open access: yesEnergy Science &Engineering, EarlyView.
Static mixers play a crucial role in the safe transport of hydrogen‐blended natural gas. Computational fluid dynamics (CFD) was employed to investigate the effects of structural parameters of the HEV static mixer on the mixing behavior and homogeneity of natural gas and hydrogen. The modeling approach was well validated against experimental data.
Xiang Zhou   +5 more
wiley   +1 more source

Singularities at rims in three-dimensional fluid flow [PDF]

open access: yes, 1999
Asymptotic solutions are presented for Stokes flow near circular rims in three-dimensional geometries. Using nonstandard toroidal coordinates, asymptotic analytical expressions are derived for different corner angles. In comparison to the two-dimensional
Driesen, C.H., Kuerten, J.G.M.
core   +2 more sources

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