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タイトル: 単流掃気型機関の模型気筒内におけるスワールの挙動(定常流速度分布)
その他のタイトル: Behavior of Swirl Flow in a Model Cylinder with Uniflow Scavenging SyStem(Steady Flow Velocity Distribuion)
著者: 石田, 正弘 / 泉, 修平 / 近藤, 博美 / 横山, 盛昭
著者(別表記) : Ishida, Masahiro / Izumi, Shuhei / Kondo, Hiromi / Yokoyama, Moriaki
発行日: 1983年 1月
出版者: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
引用: 長崎大学工学部研究報告, 13(20), pp.19-26; 1983
抄録: The authors have investigated experimentally the influences of stroke bore ratio, scavenging port angle and scavenging air flow quantity on the swirl characteristics in a model cylinder of diesel engine with uniflow scavenging system. In this test, the laser doppler velocity meter (LDV) was employed to measure the axial and circumferential velocity distributions precisely. As a result, the following behaviors have been made clear. (1) Swirl intensity does not almost vary in spite of the increase in stroke bore ratio. (2) The larger the stroke bore ratio is, the less influence of exhaust valve on swirl flow pattern is. (3) With a small scavenging port angle swirl intensity decreases downstream significantly, and the dead zone at the lower part of cylinder liner is larger as compared with the case of a large scavenging port angle. (4) In case of the large scavenging port angle, swirl intensity does not vary in entire region of cylinder, but there is a little inverse flow region near the center of the cylinder. (5) The velocity profiles are similar in a whole flow field at different air flow rate conditions.
URI: http://hdl.handle.net/10069/24090
ISSN: 02860902
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:第13巻 第20号

引用URI : http://hdl.handle.net/10069/24090



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