Unsteady Aerodynamic Force on a Knuckleball in Soccer

被引：18

作者：

Hong, Sungchan ^{[1
]}

Chung, Chulsoo ^{[2
]}

Nakayama, Masao ^{[3
]}

Asai, Takeshi ^{[3
]}

机构：

[1] Univ Tsukuba, Doctoral Program Comprehens Human Sci, Tennoudai 1-1-1, Ibaraki 3058574, Japan

[2] Seoul Natl Univ, Seoul 151742, South Korea

[3] Univ Tsukuba, Ibaraki 3058574, Japan

来源：

ENGINEERING OF SPORT 8: ENGINEERING EMOTION - 8TH CONFERENCE OF THE INTERNATIONAL SPORTS ENGINEERING ASSOCIATION (ISEA) | 2010年 / 2卷 / 02期

关键词：

Ball; Knuckleball; Aerodynamics; Unsteady; Vortex; SPHERE; FLOW;

D O I：

10.1016/j.proeng.2010.04.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this study is to analyze the fluid mechanics and frequency of forces acting on a knuckleball, specifically a soccer ball that was kicked and was in flight, was visualized using a smoke agent (titanium tetrachloride), and its unsteady aerodynamics were investigated. In the case of the knuckleball, the peak value of the vortex lift reached approximately 2.0 N, and the average vortex lift force frequency of approximately 3.5 Hz. A comparison of this vortex lift frequency and vortex oscillation frequency indicated that these frequencies tended to act in unison with a high statistical correlation (r = 0.83, p < 0.01). (C) 2010 Published by Elsevier Ltd.

引用

页码：2455 / 2460

页数：6

共 50 条

[11] Investigating the Knuckleball Effect in Soccer Using a Smart Ball and Training Machine
Eager, David
Ishac, Karlos
Zhou, Shilei
Hossain, Imam
SENSORS, 2022, 22 (11)
[12] Unsteady aerodynamic force of tilt ducted fan during transition period
National Key Laboratory of Science and Technology on Aerodynamic Design and Research, School of Aeronautics, Northwestern Polytechnical University, Xi'an
710072, China
Hangkong Dongli Xuebao, 1 (155-163):
[13] Sensitivity of the aerodynamic force unsteady characteristics of wind turbine airfoil to turbulence
Guo X.
Li Y.
Li R.
Li D.
Yang B.
Zhao F.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 2023, 39 (03): : 52 - 59
[14] EFFECTS OF INLET CHAMBER STRUCTURE OF THE CONTROL STAGE ON THE UNSTEADY AERODYNAMIC FORCE
Gao, Keke
Wang, Chongyu
Xie, Yonghui
Zhang, Di
PROCEEDINGS OF THE ASME TURBO EXPO: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, 2018, VOL 8, 2018,
[15] A note on the Galilean invariance of aerodynamic force theories in unsteady incompressible flows
An-Kang Gao
Jiezhi Wu
Acta Mechanica Sinica, 2019, 35 : 1150 - 1154
[16] Unsteady aerodynamic lateral force on a sphere under a uniform incoming flow
Manzanares-Bercial, Raul
Gomez-Ortega, Omar
Meseguer-Garrido, Fernando
Ogueta-Gutierrez, Mikel
Franchini, Sebastian
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2022, 231
[17] New mixed method for unsteady aerodynamic force approximations for aeroservoelasticity studies
Biskri, Djallel
Botez, Ruxandra. M.
Stathopoulos, N.
Therien, S.
Rathe, A.
Dickinson, M.
JOURNAL OF AIRCRAFT, 2006, 43 (05): : 1538 - 1542
[18] Unsteady aerodynamic force prediction on a square cylinder using κ-ε turbulence models
Lee, S
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 1997, 67-8 : 79 - 90
[19] A note on the Galilean invariance of aerodynamic force theories in unsteady incompressible flows
Gao, An-Kang
Wu, Jiezhi
ACTA MECHANICA SINICA, 2019, 35 (06) : 1150 - 1154
[20] STUDY ON UNSTEADY AERODYNAMIC FORCE OF TURBINE BLADE WITH DIFFERENT MASS FLOW
Lan, Jibing
Xie, Yonghui
Zhang, Di
PROCEEDINGS OF THE ASME POWER CONFERENCE 2008, 2008, : 341 - 347

← 1 2 3 4 5 →