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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 ...
Wall function treatment for bubbly boundary layers at low void fractions
(Academia Brasileira de CiênciasBrasilNúcleo Interdisciplinar de Dinâmica dos Fluidos, 2019)
Effect of self-stratification on sediment diffusivity in channel flows and boundary layers: a study using direct numerical simulations
(European Geosciences Union, 2014-08-06)
Sediment transport in nature comprises of bedload and suspended load, and precise modelling of these processes is essential for accurate sediment flux estimation. Traditionally, non-cohesive suspended sediment has been ...
A singular integro-differential equation model for dryout in LMFBR boiler tubes
(OXFORD UNIV PRESS, 2010)
A 2D steady model for the annular two-phase flow of water and steam in the steam-generating boiler pipes of a liquid metal fast breeder reactor is proposed The model is based on thin-layer lubrication theory and thin ...
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 ...
Prediction of horizontal gas–solid flows under different gravitational fields
(Elsevier, 2014)
In this paper the performance of horizontal pneumatic conveying under different gravity environments is evaluated. An Euler–Lagrange approach validated versus ground experiments is employed to predict the relevant particle ...
Prediction of horizontal gas–solid flows under different gravitational fields
(Elsevier, 2014-11-01)
In this paper the performance of horizontal pneumatic conveying under different gravity environments is evaluated. An Euler–Lagrange approach validated versus ground experiments is employed to predict the relevant particle ...
Modelagem da propagação de pressão no reinício do escoamento de fluidos de perfuração não gelificados
(Universidade Tecnológica Federal do ParanáCuritibaPrograma de Pós-Graduação em Engenharia Mecânica e de Materiais, 2011-09-30)
The fluid flow start-up is a significant problem in deepwater and in long wells such as those of the Brazilian subsalt layers. Depending on the well geometry and fluid properties, significant pressure peaks may take place ...