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Energy Science &Engineering, EarlyView.Satellite (MODIS) mapping links Urban Heat Island (UHI) intensity to city‐scale energy demand—higher daytime cooling demand and altered nighttime heating demand—supporting targeted mitigation and planning. ABSTRACT This study examines the surface urban heat island (SUHI) effect on building energy consumption in Tehran from 1998 to 2024, utilizing MODIS
Rasool Maroofiazar, Ali Maboudi Reveshti
wiley +1 more source
Energy Science &Engineering, EarlyView.This study investigates the heat transfer characteristics of copper‐foam composite phase change materials with different gradient porosities. Three models with uniform porosity and three models with gradient porosities are developed to examine their effects on temperature distribution and melting behavior. ABSTRACT Phase change materials (PCMs) exhibit
Wei Yang +6 more
wiley +1 more source
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Natural convection in droplet evaporation
Physical Review E, 1996Although droplet evaporation is widely assumed to be a diffusion process, our results show that when a droplet evaporates sufficiently fast it exhibits a vigorous interior flow. This flow is driven by surface tension gradients. The typical interior flow field behavior is shown as well as measurements of the droplet surface area and volume as it ...
, Hegseth, , Rashidnia, , Chai
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Natural Convection with Dissipative Heating
Communications in Mathematical Physics, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kagei, Yoshiyuki +2 more
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2023
Heat transport is one of the most important phenomena in environmental fluid mechanics. Of the heat transport processes, convection is by and large the most important. Convective processes in the environment, however, are rarely straightforward, necessitating investigation into the various complications that can exist for a better understanding of heat
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Heat transport is one of the most important phenomena in environmental fluid mechanics. Of the heat transport processes, convection is by and large the most important. Convective processes in the environment, however, are rarely straightforward, necessitating investigation into the various complications that can exist for a better understanding of heat
openaire +1 more source
1997
This chapter introduces the notion of natural convection. In natural convection, the fluid velocity arises purely from the heating or cooling of the heat transfer surface itself. Heating creates less dense fluid next to the surface which tends to rise under buoyancy. Furthermore, the low velocities (compared to forced convection) give low heat transfer
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This chapter introduces the notion of natural convection. In natural convection, the fluid velocity arises purely from the heating or cooling of the heat transfer surface itself. Heating creates less dense fluid next to the surface which tends to rise under buoyancy. Furthermore, the low velocities (compared to forced convection) give low heat transfer
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Stability of Transient Natural Convection
The Physics of Fluids, 1969A theoretical analysis was carried out to determine the stability properties of unsteady natural convection. In this analysis a perturbation technique was used in conjunction with a special type unsteady base flow for transient natural convection between two infinite parallel vertical plates.
Gunness, Robert C. jun. +1 more
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1992
Numerical calculation from the full differential equations for convection in an unbounded region is expensive, and hence approximate solutions are important. For small values of the Rayleigh number Ra, perturbation methods are appropriate. At large values of Ra thermal boundary layers are formed, and boundary layer theory is the obvious method of ...
Donald A. Nield, Adrian Bejan
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Numerical calculation from the full differential equations for convection in an unbounded region is expensive, and hence approximate solutions are important. For small values of the Rayleigh number Ra, perturbation methods are appropriate. At large values of Ra thermal boundary layers are formed, and boundary layer theory is the obvious method of ...
Donald A. Nield, Adrian Bejan
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NATURAL CONVECTION IN A SEMIELLIPTIC CAVITY
Numerical Heat Transfer, 1987Natural convective steady-state motion inside a bidimensional semielliptic cavity is investigated numerically by means of a finite-element algorithm. The ceiling of the cavity is kept at a known temperature with a sinusoidal spatial distribution and the floor is assumed thermally insulated.
Martín del Campo, Ernesto +2 more
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