種々の底面形状を有する垂直円柱まわりの過渡膜沸騰に関する研究

SIFT 法で得られる蒸気膜の様相における画像特徴点情報の検討

抄録

We performed transient film boiling experiments of water under the atmospheric pressure on vertical cylinders with various bottom shapes. We photographed the aspect of the vapor film near the film boiling lower limit point using a high-speed video camera to discuss the film collapse phenomenon. We detected the key points and the image feature and analyzed the number, place and time of the detected image feature points using SIFT method. We classified the trends in the image feature points into several categories according to the pattern of the vapor film collapse.