2102 底面形状の異なる垂直円柱周りのプール飽和膜沸騰冷却における固液接触様相(G06-1 熱工学(1) 伝熱(1),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

論文の詳細を見る
Quenching experiments on the film boiling heat transfer from a vertical cylinder were performed using the cylinders with a convex hemispherical bottom surface and a flat bottom surface. The silver and stainless steel were used as the materials of the test cylinders in order to investigate also the effect of the thermal conductivity. The behaviours of vapor film near the lower limit of film boiling were observed with a high speed video camera, and the differences of the vapor film collapsing processes were investigated between the flat bottomed and hemispherically bottomed cylinders, and between the silver and stainless cylinders. The number and positions of the occasionally appeared solid-liquid contacts were also investigated using the recorded images.
2008-08-02