Results 31 to 40 of about 236,260 (333)

Natural convection heat transfer effects with micro finned structures [PDF]

, 2009
This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the ...
2nd Micro and Nano Flows Conference (MNF2009), Al-Dadah, RK, Aspinwall, D, Mahmoud, S, Soo, L   +4 more
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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

Viscoelastic Natural Convection [PDF]

, 2012
Heat convection occurs in natural and industrial processes due to the presence of temperature gradients which may appear in any direction with respect to the vertical, which is determined by the direction of gravity. In this case, natural convection is the fluid motion that occurs due to the buoyancy of liquid particles when they have a density ...
openaire   +3 more sources

High‐Performance Low‐Emissivity Paints Enabled by N‐Doped Poly(benzodifurandione) (n‐PBDF) for Energy‐Efficient Buildings

Advanced Functional Materials, EarlyView.
This study introduces a scalable and colored low‐emissivity (low‐e) paint achieved by spraying an ultrathin n‐doped poly(benzodifurandione) (n‐PBDF) coating onto various colored substrates. The low‐e paint enhances thermal regulation by reducing mid‐infrared thermal emissivity to 0.19, thereby stabilizing indoor temperatures across diverse climates ...
Xiaojie Liu, Won‐June Lee, Daniel William Carne, Yanpei Tian, Andrea Felicelli, Yue Lei, Joseph A. Romo, Liyan You, Zixin Xiong, Orlando Gabriel Rivera Gonzalez, Abdulrahman Aljwirah, Qiaoqiang Gan, Jianguo Mei, Xiulin Ruan   +13 more
wiley   +1 more source

Combined Natural Convection and Radiation Heat Transfer of Various Absorbing-Emitting-Scattering Media in a Square Cavity

Advances in Mechanical Engineering, 2014
A numerical model is developed to simulate combined natural convection and radiation heat transfer of various anisotropic absorbing-emitting-scattering media in a 2D square cavity based on the discrete ordinate (DO) method and Boussinesq assumption.
Xianglong Liu, Guangcai Gong, Hengsheng Cheng   +2 more
doaj   +1 more source

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

Analysis of instability patterns in non-Boussinesq mixed convection using a direct numerical evaluation of disturbance integrals [PDF]

, 2009
The Fourier integrals representing linearised disturbances arising from an initially localised source are evaluated numerically for natural and mixed convection flows between two differentially heated plates. The corresponding spatio-temporal instability
Batchelor, Bergholtz, Carrière, Chenoweth, Chenoweth, Daniels, Deissler, Drazin, Eckert, Fukui, Hatziavramidis, Ku, Lee, Mizushima, Moffat, Rudakov, Sergey A. Suslov, Simpkins, Spooner, Suslov, Suslov, Suslov, Suslov, Suslov, Suslov, Wakitani, White, Wright, Zamora, Zhang, Zhang   +30 more
core   +2 more sources

Harnessing Outer Space for Improved Electrocaloric Cooling

Advanced Functional Materials, EarlyView.
A novel radiative heat sink/source‐integrated electrocaloric (R‐iEC) system combines the electrocaloric (EC) effect with a thermally conductive radiative cooler (TCRC) to address heat dissipation limitations in EC devices. Utilizing outer space as a heat sink, the system achieves up to 240 W m−2 of heat dissipation performance, making it highly ...
Dong Hyun Seo, Hyung Rae Kim, Joo Ho Yun, Hyunkyu Kwak, Do Hyeon Kim, Se‐Yeon Heo, Rujun Ma, Gil Ju Lee, Young Min Song   +8 more
wiley   +1 more source

Natural Convection Numeric Simulation on Metal Freezing Using Differential Method

Mekanika, 2017
The research of modeling of natural convection in metal solidification process with finite different method was conducted to determine temperature distribution and fluid flow profil with variations value Rayleigh number. The research conducted by solving
Heri Suprianto, Eko Prasetyo Budiana, Purwadi Joko Widodo   +2 more
doaj   +1 more source

Numerical prediction of mixed convection heat transfer in an enclosure [PDF]

, 2012
In this article the transport mechanism of laminar mixed convection in a shear and buoyancy driven cavity flow with locally heated lower wall and moving cooled sidewalls is numerically studied using cubic interpolation profile method.
Che Sidik, Nor Azwadi, Salehi, Mehran
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