Flow fields analysis around dimpled cylinders with spinning

Hyoung Chol Kim, Hyoung Jin Kim, Kazuhiro Nakahashi, Takuma Kato, Masaya Tsunoda

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Flows around dimpled cylinders with spinning are numerically simulated solving the compressible Navier-Stokes equations on unstructured grids. Two flow conditions are selected: 1) Reynolds number of 1.67×105 (Mach number 0.17) at 2400 rpm, 2) Reynolds number of 8.48×104 (Mach number 0.082) at 2070 rpm. These correspond to drive shot flow conditions of a golf ball after shot off and before fall down, respectively. The flow fields for the investigation of the effects of flow conditions are visualized with vorticity magnitude and pressure contours. Section pressure and streamwise velocity gradient distributions are shown for the effects of dimple geometry. Drag coefficients of numerical simulation and experiment show qualitatively good agreement with each other.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages16800-16813
Number of pages14
ISBN (Print)1563478072, 9781563478079
DOIs
Publication statusPublished - 2006
Event44th AIAA Aerospace Sciences Meeting 2006 - Reno, NV, United States
Duration: 9 Jan 200612 Jan 2006

Publication series

NameCollection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Volume22

Conference

Conference44th AIAA Aerospace Sciences Meeting 2006
Country/TerritoryUnited States
CityReno, NV
Period9/01/0612/01/06

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