2026-03-08T04:31:21Z https://ir.kagoshima-u.ac.jp/oai

oai:ir.kagoshima-u.ac.jp:00005052 2026-03-03T14:33:16Z 54:92

適正膨張超音速噴流中に置かれた円柱まわりの流れ : スートブロワ噴流のモデル実験 テキセイ ボウチョウ チョウオンソク フンリュウチュウ ニ オカレタ エンチュウ マワリノ ナガレ : スートブロワ フンリュウ ノ モデル ジッケン Flow around a Circular Cylinder in Correctly-Expanded Supersonic Free Jets : Model Experiment of Sootblower Jets 1000040336946 片野田, 洋 カタノダ, ヒロシ Katanoda, Hiroshi 宮里, 義昭 ミヤザト, ヨシアキ Miyazato, Yoshiaki 則松, 康文 ノリマツ, ヤスフミ Norimatsu, Yasufumi 白谷, 誠 シラタニ, マコト Shiratani, Makoto 益田, 光治 マスダ, ミツハル Masuda, Mitsuharu 松尾, 一泰 マツオ, カズヤス Matsuo, Kazuyasu open access 日本機械学会 Compressible Flow Supersonic Flow Jet Correct Expansion Sootblower Boiler Tube This paper describes a model experiment of sootblower jets which have been used to remove fire side deposits of boiler tubes. A circular cylinder is used instead of a boiler tube. Flowfield around the circular cylinder placed in correctly expanded jets from a supersonic nozzle with a design Mach number of 2.0 and 2.4 is studied. Visualization by schlieren method and measurement of pressure on a cylinder are performed to diagnose the flowfield. The pressure coefficient on the cylinder is found smaller than that obtained by potential flow theory around a cylinder, especially, when the cylinder is located in the potential core region of the jets. The velocity distribution on the cylinder strongly depends on the flow Mach number just downstream of the shock wave generated in front of the cylinder. 日本機械学会 2001-11 jpn journal article VoR http://hdl.handle.net/10232/14429 https://ir.kagoshima-u.ac.jp/records/5052 https://doi.org/10.1299/kikaib.67.2687 03875016 AN00187441 日本機械学會論文集. B編 67 663 2687 2692 https://ir.kagoshima-u.ac.jp/record/5052/files/AN00187441_v67n663_p2687-2692.pdf application/pdf 20.4 MB 2022-07-26 2001-11