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Published in 2017 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-017-9839-5
Abstract: Wall-bounded turbulent flows over surfaces with spanwise heterogeneous surface roughness – that is, spanwise-adjacent patches of relatively high and low roughness – exhibit mean flow phenomena entirely different to what would otherwise exist in the…
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Keywords:
outer layer;
channel;
secondary flows;
spanwise ... See more keywords
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Published in 2020 at "Science China Technological Sciences"
DOI: 10.1007/s11431-020-1687-4
Abstract: For the inverse designs of centrifugal and mixed-flow pump impellers, clarifying the generation process of secondary flows and putting forward corresponding suppression measures is an important approach to improve the impeller performance. In this paper,…
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Keywords:
prg;
pump;
inverse designs;
designs centrifugal ... See more keywords
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Published in 2018 at "Chemical Engineering Journal"
DOI: 10.1016/j.cej.2017.11.131
Abstract: Abstract Flow pattern in two split and recombine (SAR) micromixers were experimentally studied by μ -LIF measurements to validate corresponding CFD simulations. The original design of the investigated micromixer type is based on the repetition…
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Keywords:
recombine micromixer;
micromixer;
optimization split;
secondary flows ... See more keywords
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Published in 2017 at "International Journal of Multiphase Flow"
DOI: 10.1016/j.ijmultiphaseflow.2017.08.010
Abstract: Abstract Mixing is an essential operation in many microfluidic devices. Droplet-based micromixers utilize droplets for mixing enhancement. In the present study, a novel three-dimensional simulation is conducted which has the ability to capture not only…
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Keywords:
based flows;
rate;
droplet based;
secondary flows ... See more keywords
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Published in 2020 at "International Journal of Multiphase Flow"
DOI: 10.1016/j.ijmultiphaseflow.2020.103235
Abstract: Abstract We perform an experimental analysis of stratified, co-current gas-liquid flow in a straight pipe, with the aim of investigating secondary flow structures in the gas-phase. Planar PIV (particle image velocimetry) of the pipe centerline…
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Keywords:
gas liquid;
secondary flows;
secondary flow;
pipe ... See more keywords
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Published in 2020 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.1014
Abstract: The effect of spanwise heterogeneous surface geometry on turbulent boundary layer secondary flows and on skin friction is investigated experimentally. The surfaces consist of smooth streamwise-aligned ridges of different shapes and widths with spanwise wavelengths…
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Keywords:
surface;
geometry;
turbulent boundary;
surface geometry ... See more keywords
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Published in 2023 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2023.241
Abstract: Abstract The evolution of a turbulent boundary layer over truncated cones in staggered and random configurations is investigated using direct numerical simulations. Three random planform densities and one staggered, which closely match the configuration in…
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Keywords:
flows turbulent;
random arrangements;
momentum pathways;
secondary flows ... See more keywords
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Published in 2019 at "Physical Review Fluids"
DOI: 10.1103/physrevfluids.4.043905
Abstract: We simulated two particle-based fluid models, namely multiparticle collision dynamics and dissipative particle dynamics, under shear using reverse nonequilibrium simulations (RNES). In cubic periodic simulation boxes, the expected shear flow profile for a Newtonian fluid…
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Keywords:
unexpected secondary;
secondary flows;
shear flow;
reverse nonequilibrium ... See more keywords
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Published in 2017 at "High Temperature"
DOI: 10.1134/s0018151x17050133
Abstract: Specific features of secondary flows in horizontal heated pipes of a single-phase fluid under high thermal loads are studied. The analysis performed in this work shows that the reasons for the development of secondary flows…
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Keywords:
development secondary;
secondary turbulent;
turbulent circulation;
secondary flows ... See more keywords