Articles with "subcritical supercritical" as a keyword



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Fate of PAHs under subcritical and supercritical conditions in landfill leachate: Removal or formation?

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Published in 2021 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2021.128762

Abstract: Abstract In this study, fate of eight polycyclic aromatic hydrocarbons (PAHs) described as priority pollutants by the European Union during the subcritical and supercritical water oxidation (SCWO) of landfill leachate was investigated. The experiments were… read more here.

Keywords: landfill leachate; subcritical supercritical; fate; removal ... See more keywords
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Three-dimensional dynamics of vortex-induced vibration of a pipe with internal flow in the subcritical and supercritical regimes

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Published in 2018 at "International Journal of Naval Architecture and Ocean Engineering"

DOI: 10.1016/j.ijnaoe.2017.11.002

Abstract: Abstract The Three-dimensional (3-D) dynamical behaviors of a fluid-conveying pipe subjected to vortex-induced vibration are investigated with different internal flow velocity v . The values of the internal flow velocity are considered in both subcritical… read more here.

Keywords: three dimensional; internal flow; supercritical regimes; induced vibration ... See more keywords
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Elucidating hydrochar morphology and oxygen functionality change with hydrothermal treatment temperature ranging from subcritical to supercritical conditions

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Published in 2020 at "Journal of Analytical and Applied Pyrolysis"

DOI: 10.1016/j.jaap.2020.104965

Abstract: Abstract Hydrochar, used for numerous applications including solid fuel, adsorbent medium, anode material, and soil amendment, is the major solid product or unwanted byproduct resulting when biomass undergoes for subcritical or supercritical water treatment, respectively.… read more here.

Keywords: temperature; morphology oxygen; reaction; subcritical supercritical ... See more keywords
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Cross-flow vortex-induced vibration of a flexible riser transporting an internal flow from subcritical to supercritical

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Published in 2017 at "Ocean Engineering"

DOI: 10.1016/j.oceaneng.2017.04.039

Abstract: Abstract This study aims to model and explore the IFE (Internal Flow Effect) on the CF (Cross-Flow) VIV (Vortex-Induced Vibration) of a flexible riser transporting an axial single-phase internal flow. The simulation model employs the… read more here.

Keywords: internal flow; vibration; flexible riser; subcritical supercritical ... See more keywords
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Characterization and performance of reverse osmosis and nanofiltration membranes submitted to subcritical and supercritical CO2

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Published in 2017 at "Journal of Supercritical Fluids"

DOI: 10.1016/j.supflu.2017.05.015

Abstract: Abstract Behavior of nanofiltration (NF270 and NP030) and reverse osmosis (BW30 and ORAK) polymeric membranes in systems with dense CO 2 was evaluated. The influence of transmembrane pressure on the CO 2 permeate flux at… read more here.

Keywords: nanofiltration; membrane; subcritical supercritical; reverse osmosis ... See more keywords
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Subcritical and supercritical bifurcations in axisymmetric viscoelastic pipe flows

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Published in 2021 at "Journal of Fluid Mechanics"

DOI: 10.1017/jfm.2021.852

Abstract: Abstract Axisymmetric viscoelastic pipe flow of Oldroyd-B fluids has been recently found to be linearly unstable by Garg et al. (Phys. Rev. Lett., vol. 121, 2018, 024502). From a nonlinear point of view, this means… read more here.

Keywords: supercritical bifurcations; axisymmetric viscoelastic; viscoelastic pipe; pipe flows ... See more keywords
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Transitions in overstable rotating magnetoconvection.

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Published in 2020 at "Physical Review E"

DOI: 10.1103/physreve.102.013107

Abstract: The classical Rayleigh-BĂ©nard convection (RBC) system is known to exhibit either subcritical or supercritical transition to convection in the presence or absence of rotation and/or magnetic field. However, the simultaneous exhibition of subcritical and supercritical… read more here.

Keywords: transitions overstable; rotating magnetoconvection; convection; number ... See more keywords
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Exergy Analysis and Performance Improvement of a Subcritical/Supercritical Organic Rankine Cycle (ORC) for Exhaust Gas Waste Heat Recovery in a Biogas Fuelled Combined Heat and Power (CHP) Engine Through the Use of Regeneration

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Published in 2019 at "Energies"

DOI: 10.3390/en12040575

Abstract: In the present study, a subcritical and supercritical regenerative organic Rankine cycle (rORC) was designed. The designed rORCs assist a combined heat and power (CHP) engine, the fuel of which is biogas produced from anaerobic… read more here.

Keywords: cycle; rorc; subcritical supercritical; heat ... See more keywords