講演抄録/キーワード |
講演名 |
2008-03-14 11:30
スキージャンプ・テイクオフ動作の動的数値流体解析 ○升光尚人(北大)・山本敬三(北翔大)・川初清典・清水孝一(北大) MBE2007-127 |
抄録 |
(和) |
スキージャンプテイクオフ動作の最適化を目指し,数値解析と実験による基礎的検討を行った.従来の準動的解析と動的解析を同一対象に適用し比較検討した.その結果前者は,静的な対象の実験とは良好な一致を示すものの,動的な対象の場合には明らかに異なる結果となることがわかった.次に単純なモデルで解析手法の正確さを検証後,テイクオフ動作の動的解析を行った.3種の異なるテイクオフ動作を比較した結果,低い体幹迎角をできるだけ長く維持し,最後に体幹を起こす動作が最適に近いことが明らかとなった. |
(英) |
To optimize the takeoff motion in ski jumping, a fundamental study was conducted by a computational fluid analysis and experiments. The same motion was analyzed by a conventional pseudo-dynamic analysis and by a proposed dynamic fluid analysis. In the case of a fixed model, the former shows a good agreement with the experiment. However, for a moving model the results were apparently different among these two analyses. The accuracy of the proposed dynamic analysis technique was confirmed in the experiment with a simple structure. Then, three different takeoff motions were analyzed. Through this analysis, the optimal condition of the takeoff motion was clarified. The jumper should keep the trunk-angle low as long as possible in the takeoff period. |
キーワード |
(和) |
スキージャンプ / 数値流体解析 / テイクオフ / 体幹迎角 / / / / |
(英) |
Ski jumping / Computational fluid analysis / takeoff / trunk-angle / / / / |
文献情報 |
信学技報, vol. 107, no. 541, MBE2007-127, pp. 89-92, 2008年3月. |
資料番号 |
MBE2007-127 |
発行日 |
2008-03-06 (MBE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
MBE2007-127 |