Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Numerical Study of Turbulent Flow and Heat Transfer due to Slot-jet impinging on a Moving flat plate

이동평판에 작용하는 슬롯 충돌제트의 유동 및 열전달에 관한 수치적 연구

  • 이종석 (부산대학교 대학원) ;
  • 김동건 (부산대학교 기계기술연구소) ;
  • 김문경 (창원전문대 기계설계과) ;
  • 윤순현 (부산대학교 기계공학부) ;
  • 김봉환 (진주산업대 자동차공학과)
  • Published : 2008.11.05
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Abstract

The confined slot air jet impinging normally on a moving flat surface has been investigated numerically by using commercial CFD code Ansys CFX-V11. Turbulent flows are modeled using k-w turbulence model. Two-dimensional turbulent flow is considered. Calculations were conducted for a nozzle-to-plate spacing of eight slot nozzle width, at three Reynolds number(Re=4500, 6700 and 10,000) and four surface-to-velocity ratios i.e. 0, 0.25, 0.5 and 1. Results are compared against corresponding cases for heat transfer from a stationary plate. Local Nusselt number is calculated under constant wall temperature condition. The analysis reveals that the average Nusselt number increases considerably with the jet exit Reynolds number, but decrease with the plate velocity.

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