Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Analysis of Turbulence Scales and Energy Spectrum for Engine Flows

엔진 난류의 크기척도 및 에너지 스펙트럼 해석

  • 강건용 (한국기계연구원, 엔진환경연구부) ;
  • 이진욱 (한국기계연구원, 엔진환경연구부) ;
  • 박승철 (한국산업기술대학교)
  • Received : 1998.02.16
  • Published : 1998.09.01
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Abstract

Engine turbulences obtained by LDV measurement near the compression TDC was analyzed by the classic turbulence theory. Turbulences were quantified by a cycle resolved analysis and processed to reveal integral time scale and length scale. Three different definitions were applied to obtain the turbulence time scales and then compared each others. The classic turbulence theory with the several assumptions for engine application proven to be very efficient for understanding engine turbulence in this study. It was found that the integral length scale is strongly affected and increased by tumble flow.

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