Results 11 to 20 of about 2,533 (165)

On the linear convective stability of a TiO particle–based nanofluid layer heated from below

open access: yesAdvances in Mechanical Engineering, 2019
The linear hydrodynamics of Rayleigh convection in a horizontal nanofluid layer heated from below was studied. The hydrodynamic stability of the fluid layer bounded by two horizontal perfect thermal conducting walls was extended to analyze steady and ...
Ildebrando Pérez-Reyes   +1 more
doaj   +1 more source

A Two-Dimensional Numerical Study of Hydrodynamic, Heat and Mass Transfer and Stability in a Salt Gradient Solar Pond

open access: yesEnergies, 2012
In this work, the problem of hydrodynamic, heat and mass transfer and stability in a salt gradient solar pond has been numerically studied by means of computational fluid dynamics in transient regime.
Ali Ben Moussa   +2 more
doaj   +1 more source

Dynamic processes during accretion into a black hole

open access: yesDiscrete Dynamics in Nature and Society, 2001
Accretion disc theory was first developed as a theory with the local heat balance, where the whole energy produced by a viscous heating was emitted to the sides of the disc.
G. S. Bisonvatyi-kogan
doaj   +1 more source

Modelling of elastoviscoplastic properties of the subgrade. Problem statement 1

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2016
A brief analysis of the physical and mechanical properties of materials, used in the construction of the rail bed, has shown that in scientific and technical literature there is scattered unsystematic information obtained under different physical ...
V. M. Bel’Kov
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi   +3 more
wiley   +1 more source

The morphological-hydrodynamic resilience mechanisms against the highest storm tide level in a Bay-Inlet-Channel system

open access: yesFrontiers in Marine Science
Extreme storm tide levels, arising from nonlinear cross−scale interactions among surge, astronomical tide, and fluvial flood, threaten estuarine stability and cause major economic losses.
Haichen Liu   +12 more
doaj   +1 more source

Nanodiamond Sensing in Dynamic Environments With Fast‐Tracking Through Four‐Point Positioning

open access: yesAdvanced Functional Materials, EarlyView.
A four‐point positioning tracking (4PPT) platform enables fast 3D feedback translational tracking of fluorescent nanodiamonds while simultaneously recording ODMR spectra. By integrating real‐time translational tracking with quantum sensing, mobile nanodiamonds are used for in‐situ nanothermometry, nanorheometry, and 6D translation–rotation tracking in ...
Guoli Zhu   +10 more
wiley   +1 more source

Mixed-convection instability in a horizontal Brinkman porous layer saturated with a viscoelastic fluid under magnetic-field and thermal-radiation effects: Application to renewable energy systems

open access: yesCase Studies in Thermal Engineering
This study examines the influence of magnetic field and thermal radiation on the onset of mixed convection instability in a horizontal porous layer saturated by a viscoelastic Kelvin-Voigt fluid with a special focus on applications to renewable energy ...
Cédric Gervais Njingang Ketchate   +3 more
doaj   +1 more source

Ultrafast Thermal Shock Synthesis of CuNiSnLa Medium‐Entropy Metallic Glass for Sustainable Nitrogen Fixation via Plasma‐Coupled Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
This work introduces an ultrafast thermal shock strategy to synthesize a CuNiSnLa medium‐entropy metallic glass (MEMG). The rapid heating and cooling process generates a robust, highly active catalyst for electrocatalytic nitrate reduction to ammonia (NRA).
Hongbo Chen   +7 more
wiley   +1 more source

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