Radiation Heat Transfer in Three-Dimensional Closed Space Including Diffuse and Specular Surfaces. (Numerical Calculation Method Using an Improved Ray-Tracing Method)

Autor:	Yukio Nakano, Toshiyuki Miyanaga
Rok vydání:	2000
Předmět:	Fluid Flow and Transfer Processes Materials science business.industry Mechanical Engineering Radiant energy View factor Ray tracing (physics) Optics Thermal radiation Heat transfer Radiative transfer Electric heating Specular reflection Physical and Theoretical Chemistry business
Zdroj:	JSME International Journal Series B. 43:449-459
ISSN:	1347-5371 1340-8054
DOI:	10.1299/jsmeb.43.449
Popis:	A method of numerical calculation for radiation heat transfer in a three-dimensional closed space including diffuse and specular surfaces was developed. To enable an analysis of the radiation heat exchange on each surface considering multiple specular reflections and obstacles to radiation in the space, an improved heat ray-tracing method was presented to calculate view factors accurately. The method was determined to be applicable to complicated problems in test calculations using models with specular surfaces and obstacles. Continuing efforts are being applied to more realistic problems. The example examined in this paper is an infrared emitter with a parabolic specular reflector, which is a conventional electric heating apparatus. The measured result for radiant power distribution agrees well with the calculated one. The practical validity of our method was verified
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cda3c7de41ed362e6cac613fa6e4f48b https://doi.org/10.1299/jsmeb.43.449 Zobrazit plný text záznamu