USING PERTURBED AIRFLOW SURFACES TO REDUCE DRAG

Authors

  • Mihail Valentin Hornea University Politehnica of Bucharest
  • Ionel Simion Ph.D. Eng. University Politehnica of Bucharest

Keywords:

dimples, golf ball, soft ball, unattached airflow, reduced drag

Abstract

The golf ball is a very interesting aerodynamic device. As a sphere, the coefficient of drag should be about 0.48. However, because of the surface of the golf ball, the drag coefficient can be much lower, up to 12%. This paper explores the multitude of ways, designs and concepts that create such a lower drag coefficient, through computational fluid dynamics analysis, and using those findings how to use them when designing new parts to increase the efficiency and reliability of the device that uses said parts while increasing the quality of life of the user of the devices.

Downloads

Download data is not yet available.

Author Biography

Ionel Simion Ph.D. Eng., University Politehnica of Bucharest

Professor Head of Department of Engineering Graphics and Industrial Design

References

https://www.grc.nasa.gov/www/k-12/WindTunnel/Activities/lift_formula.html Accessed 11.07.2018

https://www.grc.nasa.gov/WWW/k-12/airplane/lift1.html; Accessed 11.07.2018

Wikipedia, Lift force, figure 2,5(illustration of airflow separation) https://en.wikipedia.org/wiki/ Lift _ (force) Accessed 12.07.2018

https://www.geoffshackelford.com/homepage/2012/8/22/ 211-mph-new-ball-speed-record-set-with-a-3-wood.html Accessed 14.07.2018

https://www.sportskeeda.com/football/5-fastest-shots-ever-recorded-football-history/5 Accessed 11.07.2018

https://www.sciencelearn.org.nz/resources/1346-causes -of-aerodynamic-drag Accessed 11.07.2018

Wikipedia, Drag, figure 3(skin friction form drag) https://en.wikipedia.org/wiki/Drag_(physics) Accessed 13.07.2018

https://www.merriam-webster.com/dictionary/airflow Accessed 11.07.2018 [9] https://en.wikipedia.org/wiki/Golf_ball Accessed 13.07.2018

A study of dimple characteristics on golf ball drag Harun Chowdhury*, Bavin Loganathan, Yujie Wang, Israt Mustary and Firoz Alam

https://www.scientificamerican.com/article/how-do-dimples-in-golf-ba/ Accessed 11.07.2018

http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1584206 Accessed 21.07.2018

http://www.racecar-engineering.com/articles/technology/can-dimpled-aerodynamic-surfaces-reduce-drag/ Accessed 22.07.2018

The influence of golf ball dimples on aerodynamic characteristics Takeshi Naruoa, *, Taketo Mizotab

Science and Golf IV Eric Thain

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

https://www.sciencelearn.org.nz/resources/1346-causes-of-aerodynamic-drag Accessed 11.07.2018 http://www.aerospaceweb.org/question/aerodynamics/q0215.shtml Accessed 22.01.2019

Downloads

Published

2019-05-20

Issue

Section

Industrial Design and Graphic Design

Most read articles by the same author(s)

1 2 > >>