Results 31 to 40 of about 25,487 (265)

High-Rayleigh-Number Convection in a Vertical Channel [PDF]

Physical Review Letters, 2006
We measure the relation between convective heat flux and temperature gradient in a vertical channel filled with water, the average vertical mass flux being zero. Compared to the classical Rayleigh-Bénard case, this situation has the advantage of avoiding plates and, thus, their neighborhood, in which is usually concentrated most of the temperature ...
Gibert, Mathieu, Pabiou, Hervé, Chillà, Francesca, Castaing, Bernard   +3 more
openaire   +3 more sources

A lattice Boltzmann investigation of two-phase natural convection of Cu-water nanofluid in a square cavity

Case Studies in Thermal Engineering, 2019
A numerical investigation of two-phase natural convection of Cu-water nanofluid in a square cavity is conducted by using a novel volume fraction-thermal lattice Boltzmann method to solve the governing equations of the flow field, temperature field, and ...
Danjie Xu, Yang Hu, Decai Li
doaj   +1 more source

Double-Diffusive Effects on the Onset of Rayleigh-Benard Convection of Water-Based Nanofluids

Applied Sciences, 2022
A numerical study on the Rayleigh–Benard convection in a shallow cavity filled with different metal-oxide water-based nanofluids is presented through a two-phase model, which accounts for the effects of the Brownian diffusion and thermophoresis, at ...
Massimo Corcione, Alessandro Quintino
doaj   +1 more source

Numerical Analysis of Bioconvection Generated by Chemotactic Bacteria

Journal of Fluid Science and Technology, 2009
Numerical simulations were carried out modeling the bioconvection generated by chemotactic bacteria in a shallow chamber, and the influence of the Rayleigh number on bioconvection was examined.
Hideki YANAOKA, Takao INAMURA, Kaoru SUZUKI   +2 more
doaj   +1 more source

Experimental Investigation into Natural Convection Heat Transfer inside Triangular Enclosure with Internal Hot Cylinder

مجلة النهرين للعلوم الهندسية, 2023
Natural convection air heat transfer and fluid movement currents around a hot circular cylinder inside an inclined triangular enclosure has been analyzed experimentally.
Akeel Abdullah Mohammed, Ansam Adil Mohammed, Shylesha V. Channapattanac   +2 more
doaj   +1 more source

Prandtl-, Rayleigh-, and Rossby-number dependence of heat transport in turbulent Rotating Rayleigh-Bénard convection [PDF]

Physical Review Letters, 2009
Experimental and numerical data for the heat transfer as a function of the Rayleigh-, Prandtl-, and Rossby numbers in turbulent rotating Rayleigh-Benard convection are presented. For relatively small $Ra ~ 10^8$ and large Pr modest rotation can enhance the heat transfer by up to 30%. At larger Ra there is less heat-transfer enhancement, and at small Pr
Zhong, JQ, Stevens, RJAM, Clercx, HJH, VERZICCO, ROBERTO, Lohse, D, Ahlers, G.   +5 more
openaire   +9 more sources

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

Advanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu, Yi Zhao, Liming Cai, Simin Long, Jing Kang, Jingkai Lin, Jimin Shen, Zhonglin Chen, Shaobin Wang, Huayang Zhang   +9 more
wiley   +1 more source

Thermal Convection in a Ferromagnetic Fluid Layer with Magnetic Field Dependent Viscosity: A Correction Applied

Studia Geotechnica et Mechanica, 2017
The effect of magnetic field dependent (MFD) viscosity on thermal convection in a horizontal ferromagnetic fluid layer has been investigated numerically. A correction is applied to Sunil et al. [24] which is very important in order to predict the correct
Prakash Jyoti, Kumar Rajeev, Kumari Kultaran   +2 more
doaj   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

Advanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang, Soumyajit Mojumder, Elo Overgaard Mogensen, Oriol Gavalda‐Diaz, Zihe Li, Shitong Zhou, Ajeet Kumar, James Roscow, Hamideh Khanbareh, Astri Bjørnetun Haugen, Florian Bouville   +12 more
wiley   +1 more source

Transition of thermally induced flow in a square cavity using Spectral Method [PDF]

E3S Web of Conferences
This study presents a novel mesh-free method for simulating natural convection in a square cavity filled with Newtonian fluid. The proposed algorithm integrates mesh-free Spectral methods with the Moving Collocation Element (MCOE) technique and employs a
Laasl Boutayna, Hilali Youssef, Mesmoudi Said, Askour Omar, Bourihane Oussama   +4 more
doaj   +1 more source