유체기계공업학회:학술대회논문집

한국유체기계학회 (Korean Society for Fluid machinery)
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축류 팬 누설 와류의 난류 특성

Turbulence Characteristics of a Leakage Vortex in an Axial-Flow Fan

  • 명환주 (LG 전자 홈 어플라이언스 연구소) ;
  • 백제현 (포항공과대학교 기계공학과) ;
  • 류호선 (LG 전자 홈 어플라이언스 연구소) ;
  • 이인섭 (LG 전자 홈 어플라이언스 연구소)
  • 발행 : 1999.12.01
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초록

Detailed Measurements were made to investigate the turbulence characteristics of a leakage vortex in an axial-flow fan using three-dimensional LDV. The turbulence in the leakage vortex has highly anisotropic characteristics with the radial value being the maximum. The turbulence intensity components in the vortex in the streamwise and tangential directions increase up to a certain downstrean position and then decrease. This increase is mainly due to the rapid decrease of the streamwise velocity of the vortex and partly due to the radial gradient of the streamwise velocity caused by a velocity deficit. As the vortex decays moving downstream, turbulence intensity also decrease gradually.

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