ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Heat Transfer Research
インパクトファクター: 0.404 5年インパクトファクター: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

巻:
巻 50, 2019 巻 49, 2018 巻 48, 2017 巻 47, 2016 巻 46, 2015 巻 45, 2014 巻 44, 2013 巻 43, 2012 巻 42, 2011 巻 41, 2010 巻 40, 2009 巻 39, 2008 巻 38, 2007 巻 37, 2006 巻 36, 2005 巻 35, 2004 巻 34, 2003 巻 33, 2002 巻 32, 2001 巻 31, 2000 巻 30, 1999 巻 29, 1998 巻 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2017015537
pages 53-76

TWO-DIMENSIONAL HEAT TRANSFER THROUGH SIMPLE COMPOSITE PLANAR SOLIDS: EFFECTIVENESS OF THE ONE-DIMENSIONAL THERMAL CIRCUIT ANALYSIS

Yichen Xin
School of Chemical Engineering, Purdue University, West Lafayette, IN 47907-2100, USA
David S. Corti
School of Chemical Engineering, Purdue University, West Lafayette, IN 47907-2100, USA

要約

We investigate the effectiveness of using thermal circuits in describing the rates of heat transfer through various simple two-dimensional composite planar solids. For a solid composed of two materials with direct parallel arrangement (upper and lower layers of equal thicknesses in the direction of heat transfer but with different thermal conductivities), the analytical solution of the heat conduction equation indicates that this solid is exactly described by a thermal circuit composed of two resistors in parallel in the limit of negligible heat losses along both the top and bottom surfaces. While no longer exact, thermal circuits nonetheless provide accurate estimates of the following two other composite planar solids: 1) a solid comprising three different materials, the upper layer being made of two separate materials in series and the lower layer made of the third material; and 2) a solid comprising an outer material completely enclosing a different inner material. For these solids, the parallel representation (effective resistors in parallel with each effective resistor being composed of resistors in series) provides a lower bound on the actual rate of heat transfer, while the series representation (effective resistors in series with each effective resistor being composed of resistors in parallel) provides an upper bound on the actual rate of heat transfer. The averages of these two bounds provide very accurate estimates of the numerically calculated rates of heat transfer. Our analysis suggests that the thermal circuit analogy should provide reliable estimates of the heat transfer rates through other composite solids.


Articles with similar content:

THE ENERGY FLUX TO BODIES ROTATING IN RAREFIED GAS
TsAGI Science Journal, Vol.50, 2019, issue 2
Sergei Lvovich Gorelov
ESTIMATION OF THE INCIDENT RADIATIVE HEAT FLUX FROM TRANSIENT TEMPERATURE MEASUREMENTS IN A SEMITRANSPARENT SLAB
International Heat Transfer Conference 11, Vol.21, 1998, issue
Martin Raynaud, Nerbe J. Ruperti, Jr.
NONLINEAR FERROCONVECTION IN A POROUS LAYER USING A THERMAL NONEQUILIBRIUM MODEL
Special Topics & Reviews in Porous Media: An International Journal, Vol.1, 2010, issue 2
Sunil, Poonam Sharma, Amit Mahajan
EFFECTS OF THE IRROTATIONAL VISCOUS PRESSURE ON MAGNETOHYDRODYNAMIC KELVIN−HELMHOLTZ INSTABILITY WITH MASS TRANSFER THROUGH POROUS MEDIA
Journal of Porous Media, Vol.17, 2014, issue 10
Mukesh Awasthi
General Solution for Two-Dimensional Corner Flows Under Darcy's
International Journal of Fluid Mechanics Research, Vol.32, 2005, issue 4
Yu. A. Semenov, L. J. Cummings