1007 核沸騰熱伝達に関する数値解析(OS10-1 産業界における非定常現象,オーガナイズドセッション)

Abstract

We present numerical results on the bubble dynamics growing on the heated surface and the associated heat transfer. The bubble departure diameter and the bubble departure time is calculated under various wall superheat conditions. The effects of contact angle are also investigated. Further, the amount of heat transfer rate through the heater surface, and that through the liquid-gas interface are calculated to elucidate the heat transfer mechanisms. The results show that the bubble departure diameter for low wall superheat is well predicted by Fritz theory, and that the fluid inertia becomes relevant in higher wall superheat conditions.