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Mostrando ítems 1-10 de 21
Resolvent modelling of near-wall coherent structures in turbulent channel flow
(2020-10-01)
Turbulent channel flow was analysed using direct numerical simulations at friction Reynolds numbers Reτ=180 and 550. The databases were studied using spectral proper orthogonal decomposition (SPOD) to identify dominant ...
Spectral analysis of the turbulent energy cascade and the development of a novel nonlinear subgrid-scale model for large eddy simulation.Análise spectral da cascata de energia turbulenta e desenvolvimento de um novo modelo submalha não linear para simulação das grandes escalas.
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia Mecânica, 2019)
Spectral proper orthogonal decomposition and resolvent analysis of near-wall coherent structures in turbulent pipe flows
(2020-01-01)
Direct numerical simulations, performed with a high-order spectral-element method, are used to study coherent structures in turbulent pipe flow at friction Reynolds numbers and. The database was analysed using spectral ...
Influence of particle mass fraction over the turbulent behaviour of an incompressible particle-laden flow
(MDPI, 2021-10-21)
The presence of spherical solid particles immersed in an incompressible turbulent flow was
numerically investigated from the perspective of the particle mass fraction (PMF or φm), a measure
of the particle-to-fluid mass ...
Effect of geometry on flow structure and pressure drop in pneumatic conveying of solids along horizontal ducts
(CSIR-NIScPR, 2011-02)
This study presents further developments in Euler/Lagrange approach to calculate confined particle-laden flows in pneumatic conveying lines. Special emphasis is placed on influence of particle-wall collisions and wall ...
Mechanisms of Complete Turbulence Suppression in Turbidity Currents Driven by Mono-Disperse and Bi-Disperse Suspensions of Sediment
(Sage Publications, 2014-09)
Turbidity currents are submarine flows where the sediment fluid mixture (heavy current) drives along the sloping ocean floor displacing the surrounding clear fluid (light ambient). Under the influence of gravity, the ...
Near-interface turbulence structure in co-current gas-liquid stratified flows
(2020)
Escoamentos estratificados estão presentes em diferentes processos na indústria e fenômenos naturais. Embora diferentes modelos de fechamento para este tipo de escoamento estejam disponíveis na literatura, o estudo da ...
Experimental and numerical study of the motion of non-spherical particles in wall-bounded turbulent flows
(Universidad Autónoma de Occidente, 2007-10)
This book compiles the obtained results in the research project entitled “Estudio
Experimental y Modelización del Movimiento de Partículas no Esféricas en un
Flujo Turbulento y su Interacción con Paredes Sólidas” developed ...
Characterisation of pneumatic conveying systems using the Euler/Lagrange approach
(Elsevier, 2013-02)
This paper deals with the transport of solid particles in pneumatic conveying systems, namely a 5 m horizontal pipe, a 90° bend and 5 m a vertical pipe. The pipe diameter is 150 mm in all cases and the average conveying ...