@inproceedings{oai:jaxa.repo.nii.ac.jp:00037669,
 author = {奥出, 宗重 and 早藤, 英俊 and 松井, 辰彌 and Okude, Muneshige and Hayafuji, Hidetoshi and Matsui, Tatsuya},
 book = {航空宇宙技術研究所特別資料, Special Publication of National Aerospace Laboratory},
 month = {Nov},
 note = {航空宇宙技術研究所 24-25 Sep. 1991 (9th). 16-18 Mar. 1992 (10th) 東京 日本, National Aerospace Laboratory 24-25 Sep. 1991 (9th). 16-18 Mar. 1992 (10th) Tokyo Japan, 多数の熱線プローブを束ねた2本のレークを用いて高速鉄道車両の側面における速度分布を計測した。レークの1本は下り車線を速さ320km/hで走る列車の最後尾車両側面に取り付け、他の1本は上り車線上で停止している列車の最前列車両前端に取り付けた。2つのレークに束ねられた熱線プローブが一直線に並ぶ瞬間を捉えて境界層全体にわたる速度分布が求められる。その後の走行列車の伴流外側部分の速度分布が停止列車上のレークによって計測される。走行列車最後尾車両上の境界層厚さは約2.5mで、伴流における速度変動のスペクトルは1.5Hzと3.5Hzに強い成分をもつ。スモークマーカによる煙を用いて伴流における流れのパターンを可視化した。ビデオカメラによる流れの記録は成功しなかったが、目視観測により最後尾車両後面から自動車におけると同様な交互渦放出があることを認めた。気流糸による最後尾車両後面の流れの可視化でも交互渦放出が示された。放出周波数はおおよそ2〜5Hzであった。この渦放出が最後尾車両の横搖れ振動の原因の1つであることが考えられる。, The velocity distributions in the boundary layer on the side wall of a high speed train were measured by using two rakes of the multiple hot-wires. One was set on the wall of the last car of a train which was running at 320 km/hr on the downway railroad, the other was set on the nose of the first car of a train which was at rest on the upway railroad. The instant the two rakes of multiple hot-wire came in a straight line, the velocity distribution throughout the boundary layer could be obtained. After the instant the velocity distributions in the outer part of the wake behind the running train were measured by the stationary hot-wire rake set on the car at rest. The thickness of the boundary layer on the wall of the last car was about 2.5 m. The spectrum of the velocity fluctuations in the wake had strong intensity at about 1.5 and 3.5 Hz in its distribution. The flow pattern in the wake was visualized by using the smoke generated by smoke markers. Recording of the wake flow by a video camera was not successful, but the naked eye observation noticed the alternating vortex shedding from the rear surface of the last car as in the case of an automobile. The flow patterns on the rear surface of the last car visualized by the tuft method also showed the alternating vortex shedding. The shedding frequency could be roughly about two to five Hz., 資料番号: AA0004167007, レポート番号: NAL SP-18},
 pages = {29--32},
 publisher = {航空宇宙技術研究所, National Aerospace Laboratory (NAL)},
 title = {高速走行車両の伴流},
 volume = {18},
 year = {1992}
}