Results 41 to 50 of about 222,693 (299)

Effect of Variable Thermal Expansion Coefficient and Nanofluid Properties on Steady Natural Convection in an Enclosure [PDF]

Journal of Applied and Computational Mechanics, 2017
Steady state natural convection is numerically investigated in an enclosure using variable thermal conductivity, viscosity and thermal expansion coefficient of Al2O3–water nanofluid. This study has been conducted for a wide range of Rayleigh numbers (103≤
Esmaeil Ghahremani, Reihaneh Ghaffari, Hossein Ghadjari, Javad Mokhtari   +3 more
doaj   +1 more source

Natural convection and the evolution of a reactive porous medium [PDF]

, 2011
We describe a mathematical model of buoyancy-driven flow and solute transport in a saturated porous medium, the porosity and permeability of which evolve through precipitation and dissolution as a mineral is lost or gained from the pore fluid. Imposing a
Pritchard, David, Ritchie, Lindsey Thomson   +1 more
core   +1 more source

Photothermal Macroporous Lignin Cryogels for Off‐Grid, Continuous Atmospheric Water Collection via Interlayer Heat Recovery

Advanced Functional Materials, EarlyView.
Photothermal, macroporous lignin‐based cryogels are engineered to convert sunlight into low‐grade heat. Integrated as stacked beds in a drum‐type device, a thin copper interlayer transfers waste heat between beds, enabling interlayer heat recovery and continuous solar cycling.
Jie Yan, Jiqing Lu, Tian Bai, Lin Li, Zhaoxuan Niu, Yiying Yue, Wanli Cheng, Guangping Han, Orlando J. Rojas   +8 more
wiley   +1 more source

Thermal Performance of Convective-Radiative Heat Transfer in Porous Fins

Walailak Journal of Science and Technology, 2014
Forced and natural convection in porous fins with convective coefficient at the tips under radiation and convection effects are investigated in this paper. Aluminum and copper as fin materials are investigated.
Majid SHAHBABAEI, Seyfolah SAEDODIN
doaj   +1 more source

Numerical simulation of convective airflow in an empty room [PDF]

, 2011
Numerical simulation of airflow inside an empty room has been carried out for a forced convection, a natural convection and a mixed convection respectively, by using a computational fluid dynamics approach of solving the Reynolds-averaged Navier-Stokes ...
Horikiri, Kana, Yao, Jun, Yao, Yufeng
core   +1 more source

New conditional symmetries and exact solutions of nonlinear reaction-diffusion-convection equations. II

, 2006
In the first part of this paper math-ph/0612078, a complete description of Q-conditional symmetries for two classes of reaction-diffusion-convection equations with power diffusivities is derived.
Ames W F, Arrigo D J, Bluman G W, Cherniha R, Cherniha R Pliukhin O, Cherniha R Serov M, Dixon J M, Fitzhugh R, Fushchych W I, Fushchych W I, Fushchych W I, Gandarias M L, Kamke E, Kolmogoroff A, Levi D, Murray J D, Murray J D, Nucci M C, Oleksii Pliukhin, Oliveira-Pinto F, Ovsiannikov L V, Polyanin A D, Pucci E, Roman Cherniha, Saccomandi G   +24 more
core   +3 more sources

Thermal Performance Analysis of an Underground Closed Chamber with Human Body Heat Sources under Natural Convection [PDF]

, 2018
In this article, a combined experimental and numerical study has been performed to investigate the thermal performance of a mine refuge chamber (MRC) under natural convection.
Day, Rodney, Wang, Kequan, Wu, Hongwei, Yuan, Yanping, Zhang, Zujing   +4 more
core   +2 more sources

Laser‐Welded Cellulose‐Carbon Nanotube Nanocomposites as a 3D Scaffold of Si Anodes for High‐Performance Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A Si anode comprising entangled networks of cellulose and SWCNT (C‐CNT) nanocomposites as an anode electrode for a high‐performance LIB is realized by fully utilizing the generated microstructure of a novel conductive 3D scaffold via a low‐temperature and eco‐friendly process. Additionally, localized heating via photo‐thermal conversion can be utilized
Boeun Ryu, Younghoon Jung, Hojin Son, Min‐Young Kim, Jinsub Lim, Changhun Yun   +5 more
wiley   +1 more source

Bioinspired Polypeptide Dendrimer‐Modified Thin‐Film Composite Membranes for Selective Lithium‐Magnesium Separation with DFT Insights

Advanced Functional Materials, EarlyView.
We fabricated a biomimetic dendrimer‐modified thin‐film nanocomposite membrane with a coordination‐assisted ion‐selective interface. pH‐responsive polypeptide sites preferentially bind Mg2+ and promote Li+ permeation, as predicted by density functional theory calculations of metal‐ligand interactions.
Mehrasa Yassari, Seyedeh Fatemeh Seyedpour, Bamlak Setegne, Amir Aghaei, Behzad Ahvazi, Mostafa Dadashi Firouzjaei, Mark Elliott, Mohtada Sadrzadeh   +7 more
wiley   +1 more source

Charging of an Air–Rock Bed Thermal Energy Storage under Natural and Forced Convection

Energies
An air-rock bed thermal storage system was designed for small-scale powered generation and analyzed with computational fluid dynamics (CFD) using ANSYS-Fluent simulation. An experimental system was constructed to compare and validate the simulation model
Ashenafi Kebedom Abrha, Mebrahtu Kidanu Teklehaymanot, Mulu Bayray Kahsay, Ole Jørgen Nydal   +3 more
doaj   +1 more source