Numerical analysis of flow structures and bed entrainment in turbulent open-channel flow [PDF]
, 2009 PhDThe results from a Direct Numerical Simulation (DNS) and a Large Eddy Simulation (LES) are employed to study the large-scale coherent structures and bed entrainment in the turbulent open-channel flow.
Ma, Jianmin
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Modelling pressure fluctuations during flow boiling in microchannels with inlet compressibility and resistance [PDF]
, 2009 Confined bubble growth during flow boiling at low pressures in microchannels generates pressure fluctuations that may cause transient flow reversals that disturb the flow distribution in heat sinks formed of parallel channels joined by plena.
Gedupudi, S +2 more
core +6 more sources
Parametric forcing approach to rough-wall turbulent channel flow [PDF]
, 2012 The effects of rough surfaces on turbulent channel flow are modelled by an extra force term in the Navier–Stokes equations. This force term contains two parameters, related to the density and the height of the roughness elements, and a shape function ...
Busse, Angela +3 more
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A Numerical study of resistance in a rough walled channel flow where the ratio of roughness length scale to the depth of flow varies over a wide range [PDF]
, 2009 Numerical calculations were performed over a variety of two-dimensional rib roughness configurations in which the ratio of flow depth to roughness height was varied from 1.1 to 40.
Senior, A K
core +7 more sources
Single-phase flow and flow boiling of water in horizontal rectangular microchannels [PDF]
, 2013 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel UniversityThe current study is part of a long term experimental project devoted to investigating single-phase flow pressure drop and heat transfer, flow boiling ...
Mirmanto
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Feedback Control for Transition Suppression in Direct Numerical Simulations of Channel Flow
Energies, 2019 For channel flow at subcritical Reynolds numbers ( R e < 5772 ), a laminar-to-turbulent transition can emerge due to a large transient amplification in the kinetic energy of small perturbations, resulting in an increase in drag at the walls. The
Yiyang Sun, Maziar S. Hemati
doaj +1 more source
Simulation of rough wall turbulent channel flow using a parametric forcing approach [PDF]
, 2011 The effects of rough walls on turbulent channel flow are simulated by adding a simple forcing term to the Navier-Stokes equations. An extensive parameter study is used to explore the effects of this term on turbulent channel flow.
Busse, A., Busse, A.E., Sandham, N.D.
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Nihon Kikai Gakkai ronbunshu, 2020 The backward-facing step channel flow in which the Reynolds number is 1080 is calculated to investigate the control effect by a DBD plasma actuator which is activated with continuous drive or burst modulation.
Keunseob LEE +2 more
doaj +1 more source
Turbulent structures, integral length scale and turbulent kinetic energy (TKE) dissipation rate in compound channel flow [PDF]
, 2017 In the present study, high data rate measurements were obtained for the streamwise and vertical velocity components using 2D Laser Doppler Velocimeter. The turbulent field in a straight compound-channel flow was characterized for three different uniform ...
Roja-Solórzano, Luís R. +3 more
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Some exploratory aspects of two-liquid flows in microgeometries [PDF]
INCAS BulletinAn experimental study concerning two-liquid channel flows and the corresponding flow regimes at the millimetric scale is presented for a wide range of the flow rate ratio.
Victoria-Elena PLOPEANU +1 more
doaj +1 more source