三角タブを用いたガスタービン翼の膜冷却効率の向上 西村 正紀 志沢 高朗 本阿弥 眞治 公益社団法人日本ガスタービン学会 日本ガスタービン学会誌 03874168 24 95 66 73 1996-12-10 This paper describes the effects of a delta-tab on the film cooling effectiveness. The wall-jet is injected streamwisely and laterally into a two-dimensional turbulent boundary layer. A small delta-tab is installed at the edge of the injection hole exit. The mass flux ratio of the wall-jet to the main stream is set at 0.5,0.85 and 1.2 in streamwise injection, and at 0.5 and 1.2 in lateral injection. An encapsulated temperature-sensitive liquid crystal is used to measure the temperature distribution on the surface. Upstream-tab in streamwise injection prevents the primary stream from convoluting in the downstream region. The total cooling effectiveness in streamwise injection with a upstream-tab is larger than that in the spanwise injection at downstream. 1996-12-10 110002766001 AN00186926 4096185 JPN CJP NDL NII-ELS 1 21 Improvement of a Cooling Effectiveness by the Use of a Delta-Tab NISHIMURA Masanori SHIZAWA Takaaki HONAMI Shinji Gas Turbine Society of Japan Journal of the Gas Turbine Society of Japan This paper describes the effects of a delta-tab on the film cooling effectiveness. The wall-jet is injected streamwisely and laterally into a two-dimensional turbulent boundary layer. A small delta-tab is installed at the edge of the injection hole exit. The mass flux ratio of the wall-jet to the main stream is set at 0.5,0.85 and 1.2 in streamwise injection, and at 0.5 and 1.2 in lateral injection. An encapsulated temperature-sensitive liquid crystal is used to measure the temperature distribution on the surface. Upstream-tab in streamwise injection prevents the primary stream from convoluting in the downstream region. The total cooling effectiveness in streamwise injection with a upstream-tab is larger than that in the spanwise injection at downstream. 西村 正紀 NISHIMURA Masanori 沖電気工業(株) 志沢 高朗 SHIZAWA Takaaki 東京理科大学工学部 本阿弥 眞治 HONAMI Shinji 東京理科大学工学部