Home >

news Help

Publication Information


Title
Japanese:CLBMによる回転移動する野球ボールの空力解析 
English: 
Author
Japanese: 大橋遼河, 渡辺勢也, 青木尊之, 佐山将太朗, 田中博人.  
English: Ryoga Ohashi, Seiya Watanabe, TAKAYUKI AOKI, Shotaro Sayama, Hiroto Tanaka.  
Language Japanese 
Journal/Book name
Japanese: 
English: 
Volume, Number, Page        
Published date Nov. 27, 2019 
Publisher
Japanese: 
English: 
Conference name
Japanese:日本流体力学会第33回数値流体力学シンポジウム 
English: 
Conference site
Japanese:北海道 
English: 
Official URL https://www2.nagare.or.jp/cfd/cfd33/index.html
 
Abstract There are many types of pitching balls in baseball. The difference among types of pitching is caused by baseball’s “moving speed, rotating speed and axis of rotation”. It has been understood that the stitch of the ball is very important. These parameters change the fluid force acting on a baseball, and it causes different trajectories of the ball. In this study, we calculated flows around rotating and moving baseballs by using Cumulant-LBM. First, we analyze the flow around a sphere in high Reynolds number region and reproduce the drug crisis. Next, we study trajectories of a ball under various conditions by calculating the flow around the baseball.

©2007 Tokyo Institute of Technology All rights reserved.