Reciprocity Principle and Choice of the Reflectance Model for Physically Correct Modeling of Effective Emissivity

Published

August 17, 2002

Author(s)

A Prokhorov, Leonard Hanssen, Sergey Mekhontsev

Abstract

In the last two decades considerable Progress has been made in numerical modeling of isothermal and non-isothermal cavities by the Monte Carlo method, in particular, by the use of the uniform specular-diffuse reflection model and backward ray tracing techniques. However, this technique has no essential theoretical foundation. In the present paper the comparative numerical analysis of forward and backward ray tracing algorithms is performed. Numerical experiments show that the'use of uniform specular-diffuse reflection model, which obeys the reciprocity principle lead to excellent agreement between effective emissivities, computed by forward and backward ray tracing. At the same time, results obtained for non-reciprocal Phong's model demonstrate substantial discrepancies.

Proceedings Title

The 8th symposium on Temperature: Its Measurement and Control in Science and Industry

Conference Dates

August 17, 2002

Conference Location

Undefined

Conference Title

Temperature: Its Measurement and Control in Science and Industry

Pub Type

Conferences

Keywords

effective emissivity, Monte Carlo method, numberical modeling, reciprocity principle, reflection model

Citation

Prokhorov, A. , Hanssen, L. and Mekhontsev, S. (2002), Reciprocity Principle and Choice of the Reflectance Model for Physically Correct Modeling of Effective Emissivity, The 8th symposium on Temperature: Its Measurement and Control in Science and Industry, Undefined (Accessed April 25, 2024)