Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Unsteady Flow Characteristics in a Industrial Mixer with Hydrofoil Types Impeller by PIV

PIV에 의한 산업용 교반기내 Hydrofoil 임펠러 형태에 따른 비정상 유동특성에 관한 연구

  • 김범석 (한국해양대학교 대학원 기계공학과) ;
  • 김정환 (한국해양대학교 대학원 기계공학과) ;
  • 강문후 ((주)우진 기술연구소) ;
  • 김진구 (충북과학대학 컴퓨터응용기계과) ;
  • 이영호 (한국해양대학교 기계 정보공학부)
  • Published : 2003.11.05
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Abstract

Mixers are used in various industrial fields where it is necessary to intimately mix two reactants in a short period of time. However, despite their widespread use, complex unsteady flow characteristics of industrial mixers are not systematic investigated. The present study aimed to clarify unsteady flow characteristics induced by various impellers in a tank. Impellers arc hydrofoil turbine and neo-hydrofoil turbine types. A high speed CCD camera and an Ar-Ion laser for illumination were adopted to clarify the time-dependent flow characteristics of the mixers. The rotating speed of impellers increased from 6Hz to 60Hz by 6Hz, The maximum velocity around neo-hydrofoil impeller is higher than the hydrofoil type impeller. These two types of turbine shows that typical flow characteristics of axial turbine and suitable for mixing high-viscosity materials.

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