イワツ レイマ   IWATSU Reima
  岩津 玲磨
   所属   東京電機大学  工学部 機械工学科
   東京電機大学大学院  先端科学技術研究科 機械システム工学専攻
   東京電機大学大学院  工学研究科 機械工学専攻
   職種   教授
発表年月日 2019/09/15
発表テーマ 先端形状が矢側面の境界層に与える影響
会議名 日本流体力学会年会2019
主催者 日本流体力学会
学会区分 全国学会
発表形式 口頭(一般)
単独共同区分 共同
開催地名 東京
発表者・共同発表者 池田 智彦,芹野 厚志,中野 裕太,宮嵜 武,髙橋 直也,岩津 玲磨
概要 Elongated objects, for instance arrows, have high frictional resistance by boundary layer. Thus, it is crucial to comprehend the concept of its boundary layer state. In this research, a model of an arrow was used to investigate its boundary layer formed along the side of the arrow relative to the tip shape using PIV measurement and numerical simulation in a water tank experiment with the range of Reynolds number (Re) between 7.5×103 and 2.0×104. The tip of the arrow that was used were stream-shaped, bullet-shaped, and blunt-shaped tips. A crossbow model arrow was used for PIV measurement in which visualization and velocity distribution were calculated using a circulating water tank, whereas an archery model arrow was used for numerical simulation which is calculated using the flow function vortex method. The results of PIV measurement and numerical simulation are similar to the MSBS wind tunnel conducted in the previous research.