Flexible and Accurate Simulation of Radiation Cooling with FETD Method.

Abstract:

:Thermal management and simulation are becoming increasingly important in many areas of engineering applications. There are three cooling routes for thermal management, namely thermal conduction, thermal convection and thermal radiation, among which the first two approaches have been widely studied and applied, while the radiation cooling has not yet attracted much attention in terrestrial environment because it usually contributes less to the total amount of thermal dissipation. Thus the simulation method for radiation cooling was also seldom noticed. The traditional way to simulate the radiation cooling is to solve the thermal conduction equation with an approximate radiation boundary condition, which neglects the wavelength and angular dependence of the emissivity of the object surface. In this paper, we combine the heat conduction equation with a rigorous radiation boundary condition discretized by the finite-element time-domain method to simulate the radiation cooling accurately and flexibly. Numerical results are given to demonstrate the accuracy, flexibilities and potential applications of the proposed method. The proposed numerical model can provide a powerful tool to gain deep physical insight and optimize the physical design of radiation cooling.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Zhang HH,Sha WEI,Huang ZX,Shi GM

doi

10.1038/s41598-018-21020-w

subject

Has Abstract

pub_date

2018-02-08 00:00:00

pages

2652

issue

1

issn

2045-2322

pii

10.1038/s41598-018-21020-w

journal_volume

8

pub_type

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