한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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A COMPUTATIONAL STUDY ON PERFORMANCE OF THE DENTAL AIR MOTOR HAND-PIECE USING MOVING MESH METHOD

무빙메시를 이용한 치과 치료기기용 에어모터 핸드피스의 선응에 관한 수치해석적 연구

  • 성용준 (영남대학교 대학원 기계공학과) ;
  • 류경진 (영남대학교 대학원 기계공학과) ;
  • 송동주 (영남대학교 기계공학과)
  • Published : 2011.05.26
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Abstract

The vane type air-motor hand-piece is used widely in the dental services. There are a lot of experimental studies about air-motor but eccentrically off not many numerical studies by using Computational Fluid Dynamics. An air-motor has rotor which rotates at the center of inner housing. The retractable vanes are installed on the rotor. As the rotor of the air-motor rotates, vanes move up and down straightly in the radial direction along the guide. Therefore we have to analyze the unsteady flow field by accurate time dependent marching technique. ANSYS 12.0 CFX is used to analyze unsteady vane-motor flow field Analysis of the changing control volume inside air-motor is implemented by user-defined functions and moving mesh options. Rotational speed of the rotor is approximately 23,000rpm.

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