Results 11 to 20 of about 10,903 (225)

Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam [PDF]

open access: yesNumerical Methods in Civil Engineering, 2019
Cavitation is among the most complicated and common damages of spillway structures. This phenomenon is controlled by different parameters including the pressure, flow velocity, spillway surface material, operation time, and air flow content.
M. Barzegari   +4 more
doaj   +1 more source

Numerical Analysis of Water and Air in Venturi Tube to Produce Micro-Bubbles [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2020
Two-phase flow regimes are affected by conduit position, alignment, geometry, flow direction, physical characteristics, and flow rate of each phase as well as the heat flux toward the boundaries.
Mahin Ghannadi   +2 more
doaj   +1 more source

Numerical simulation of two-phase flow in 4x4 simulated bundle

open access: yesMechanical Engineering Journal, 2020
An evaluation methodology of a thermal-hydraulics based on a mechanism in light water reactors (LWRs) is needed from a viewpoint of the safety analysis during normal operation and unanticipated transient such as under a severe accident.
Ayako ONO   +3 more
doaj   +1 more source

Condensation in a Square Minichannel: Application of the VOF Method [PDF]

open access: yesHeat Transfer Engineering, 2013
A number of steady-state numerical simulations of condensation of R134a at mass fluxes of 400 kg m−2 s−1 and 800 kg m−2 s−1 inside a 1-mm square cross section minichannel are proposed here and compared against simulations in a circular cross section channel with the same hydraulic diameter.
BORTOLIN, STEFANO   +2 more
openaire   +3 more sources

Application of Sluice Gate in Different Positions and Its Effect on Hydraulic Parameters in Free-Flow Conditions [PDF]

open access: yesJournal of Hydraulic Structures, 2021
Underpass gates are hydraulic structures in which water moves under the gate. Here, different models of gate position including vertical, deflection to upstream and downstream of the channel with respect to the vertical axis and also oblique position ...
Rasoul Daneshfaraz   +3 more
doaj   +1 more source

CFD Analysis of Falling Film Hydrodynamics for a Lithium Bromide (LiBr) Solution over a Horizontal Tube

open access: yesEnergies, 2020
Falling film evaporators are used in applications where high heat transfer coefficients are required for low liquid load and temperature difference. One such application is the lithium bromide (LiBr)-based absorber and generator. The concentration of the
Furqan Tahir   +2 more
doaj   +1 more source

HOE DOORDACHT OM TE GAAN MET ETHISCHE VRAAGSTUKKEN?

open access: yesJournal of Social Intervention, 2020
“Als sociaal werker word je, bij de uitoefening van je vak, onvermijdelijk geconfronteerd met te nemen beslissingen. Beslissingen die niet enkel gestoeld zijn op theoretische inzichten, methodische ervaringen, correcte toepassingen van regels en codes ...
Fuusje de Graaff
doaj   +1 more source

Numerical optimization of three-cavity magneto mercury reciprocating (MMR) micropump

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
The operation of the three-cavity magneto mercury reciprocating (MMR) micropump, whose prototype were presented in an earlier companion paper, was numerically explored.
Ali Mehrabi   +2 more
doaj   +1 more source

Study of the Influence of Semi-Porous Baffles on the Three-Phase Separation Efficiency in a Horizontal Separator Vessel via CFD [PDF]

open access: yesJournal of Petroleum Science and Technology
Horizontal separator vessels exhibit better phase separation efficiencies when fluids flow at lower velocities, favoring the sedimentation process. The optimized determination of internal devices, such as baffles, can reduce fluid velocity from the inlet
Jessica Nascimento   +3 more
doaj   +1 more source

Inhibition of LncRNA Vof-16 expression promotes nerve regeneration and functional recovery after spinal cord injury

open access: yesNeural Regeneration Research, 2022
Our previous RNA sequencing study showed that the long non-coding RNA ischemia-related factor Vof-16 (lncRNA Vof-16) was upregulated after spinal cord injury, but its precise role in spinal cord injury remains unclear.
Xiao-Min Zhang   +9 more
doaj   +1 more source

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