نتایج جستجو برای: convection and radiation

تعداد نتایج: 16882486  

2013
Simon van Donk Ernest W. Tollner

Crop residues or mulches affect soil temperature influencing plant growth and related processes in the soil. A hot/cold plate combination was used to quantify heat transfer through several common dry test mulch materials (rubber chips, pine straw, wheat straw) and identify and quantify heat transfer mechanisms with the goal of modeling apparent thermal conductivity of the mulch. Mulch material ...

In the present study, the conjugate turbulent free convection with the thermal surface radiation in a rectangular enclosure bounded by walls with different thermophysical characteristics in the presence of a local heater is numerically studied. The effects of surface emissivity and wall materials on the air flow and the heat transfer characteristics are the main focus of the present investigati...

2012
S. Das C. Mandal R. N. Jana

The unsteady free convection flow with thermal radiation past a vertical plate with Newtonian heating has been studied. The governing equations have been solved numerically by the implicit finite difference method of CrankNicolson's type. The variations of the fluid velocity and temperature are presented graphically. It is found that the fluid velocity decreases near the plate and it incre...

Journal: :Monthly weather review 2016
Marcus van Lier-Walqui Ann M Fridlind Andrew S Ackerman Scott Collis Jonathan Helmus Donald R MacGorman Kirk North Pavlos Kollias Derek J Posselt

The representation of deep convection in general circulation models is in part informed by cloud-resolving models (CRMs) that function at higher spatial and temporal resolution; however, recent studies have shown that CRMs often fail at capturing the details of deep convection updrafts. With the goal of providing constraint on CRM simulation of deep convection updrafts, ground-based remote-sens...

2007
HUI WANG RONG FU

Using outgoing longwave radiation (OLR) and Tropical Rainfall Measuring Mission (TRMM) daily rain-rate data, systematic changes in intensity and location of the Atlantic intertropical convergence zone (ITCZ) were detected along the equator during boreal spring. It is found that the changes in convection over the tropical Atlantic may be induced by deep convection in equatorial South America. La...

Journal: :Energy Science & Engineering 2023

Aiming at the thermal safety and inconsistency caused by high temperature of lithium-ion (Li-ion) battery, a cooling structure embedded with flat aluminum heat pipe (FAHP) for Li-ion battery module is proposed. The three-dimensional model FAHP established considering regionalized radiation. characteristics are compared four progressive schemes, performance affected different convection (hconv) ...

2008
Gerardo Diaz Roland Winston

Numerical Heat Transfer, Part A: Applications An International Journal of Computation and Methodology Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713657973 Effect of Surface Radiation on Natural Convection in Parabolic Enclosures Gerardo Diaz a; Roland Winston a a School of Engineering, University of Calif...

2009
Jonathan L. Mitchell Raymond T. Pierrehumbert Dargan M.W. Frierson Rodrigo Caballero

We identify mechanisms controlling the distribution of methane convection and large-scale circulation in a simplified, axisymmetric model atmosphere of Titan forced by gray radiation and moist (methane) convection. The large-scale overturning circulation, or Hadley cell, is global in latitudinal extent and provides fundamental control of precipitation and tropospheric winds. The precipitating, ...

2016
Seoung Soo Lee Jianping Guo Zhanqing Li

In Part 1 of two companion studies, analyses of observational data over the Pearl River Delta of China showed that larger aerosol concentrations (polluted conditions) resulted in suppressed precipitation before the midafternoon while resulting in enhanced precipitation after the midafternoon when compared to precipitation with smaller aerosol concentrations (clean conditions). This suggests tha...

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