Results 121 to 130 of about 32,174 (313)

Performance Improvement of Hybrid Vertical Axis Wind Turbines Equipped With J‐Shaped Blades

open access: yesEnergy Science &Engineering, EarlyView.
This study presents a novel hybrid vertical axis wind turbine, utilizing J‐shaped blades in Darrieus rotor. The proposed configuration shows the potential of J‐shaped blades in improving the overall performance of hybrid rotors. ABSTRACT Vertical axis wind turbines (VAWTs) are emerging as a promising solution for urban wind energy harvesting, owing to ...
Narges Kashani   +3 more
wiley   +1 more source

Study on the Heat Transfer Law of Coal Spontaneous Combustion in Open‐Pit Mining Benches Under Varying Wind Speeds

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT The influence of external wind speed is critical for determining the spatial distribution of self‐heating zones within open‐pit mining benches. This study initially establishes the critical temperature required for the spontaneous combustion of the 13# coal seam at the Hequ Open‐Pit Mine.
Hongze Zhao   +3 more
wiley   +1 more source

Extrapolation Boundary Conditions for 2‐D Smoothed Particle Hydrodynamics

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
This paper introduces novel inflow, outflow, and wall boundaries for the WCSPH method. Utilising innovative concepts from finite volume methods, fluid properties of sequential dynamic particles with varying distances to boundaries are extrapolated to ghost and wall particles using first‐order Taylor series expansion.
Hossein Mahdizadeh   +3 more
wiley   +1 more source

Description and Convergence Order Analysis of the Finite Element‐Volume Spatial Discretization Method

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
This article presents the principles of Finite Element‐Volume discretization and conducts an analysis of its properties and convergence orders. The discretization ensures local mass conservation, second‐order convergence for velocity, and first‐order convergence for pressure.
Maria Adela Puscas   +3 more
wiley   +1 more source

Thermal–Hydraulic Performance of Nanofluids in Turbulent Separated Flow Induced by Double Forward Facing Step With Converging/Diverging Wall

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
Compared to experimental data of thermophysical properties of NFs, semi‐empirical models cannot estimate FOM correctly. For all working fluids, applying a converging channel instead of the canonical case was inefficient. Diverging channel was always favored compared to the canonical case. For less effective NFs, both lowering the reference velocity and
Mahmoud Jourabian, Mehrdad Raeesi
wiley   +1 more source

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