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http://dx.doi.org/10.5139/JKSAS.2007.35.1.033

Study on Modeling the Spectral Solar Radiation Absorption Characteristics in Determining the surface Temperature of a Ground Object  

Choi, Jun-Hyuk (중앙대학교 기계공학부 대학원)
Gil, Tae-Jun (중앙대학교 기계공학부 대학원)
Kim, Tae-Kuk (중앙대학교 기계공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.1, 2007 , pp. 33-39 More about this Journal
Abstract
This paper is aimed at the development of a software that predicts the surface temperature profiles of three-dimensional objects on the ground by considering the spectral solar radiation through the atmosphere. The spectral solar radiation through the atmosphere is modeled by using the well-known LOWTRAN7 code which analyzes the detailed spectral transmission characteristics by considering the atmospheric gas layers. In this paper, the transient temperature distribution over a cylinder is calculated by using the semi-implicit method. The spectral radiative surface properties such as the absorptivity and emissivity of the objects are used to model the effects of the solar irradiation and the surface emission. Both the detailed spectral modeling and the simple total modeling for the solar radiation absorption show fairly good agreement with each other by showing less than 3% difference in surface temperature.
Keywords
Spectral Solar Radiation; LOWTRAN7; Reference Sphere; Cylidrical Object; Spectral Surface Emission;
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