放射・伝導複合伝熱下にある水蒸気の非定常昇温過程に及ぼす狭域内非一様性の影響

概要

論文の詳細を見る
Effect of narrow band nonuniformity on unsteady heat up of water vapor under radiation-conduction combined heat trannsfer is examined by comparing the results of numerical simulations with and without incorporation of narrow band nonuniformity. Results of examination exhibited that the contribution of radiative heat transfer to the heat up rate of water vapor may be overestimated up to almost twice, if the narrow band nonuniformity effects is neglected. Separate analyses of radiative energy attributed to wall emission and gas emission clarified that the absorption of wall emission is overestimated and, on the contrary, he absorption of radiation energy emitted by water vapor itself is underestimated if the narrow band nonuniformity is neglected. It is also clarified that the negligence of the narrow band nonuniformity give rise to severe error in the estimation of absorption rate of wall and gas emission even in the case where the negligence of narrow band nonuniformity bring little change to the temperature distribution.
一般社団法人日本機械学会の論文
1999-09-25