스윕을 가진 냉각탑용 축류홴의 성능 특성에 관한 수치해석적 연구

Numerical Investigation of Performance Characteristics for Cooling Tower Axial Fans with Sweep

  • 오건제 (경남대학교 기계자동화공학부)
  • 발행 : 2009.08.30

초록

The purpose of this numerical study was to investigate performance characteristics for cooling tower axial fans with sweep. Performance data for the fans with various sweep angles were obtained in terms of the setting angle at a constant flow rate. Viscous flow calculations were carried out to obtain Performance data of the total pressure rise and hydraulic efficiency. A solution of the Ffowcs Williams-Hawkings equations was used to calculate the sound pressure level at three times fan diameter away from the fan. The calculated performance data well represented performance characteristics of the cooling tower axial fan. The total pressure rise and hydraulic efficiency at the same setting angle decreased with sweep angle. Sound pressure level slightly decreased for the fan with a sweep angle of 10 degree. No significant effect of the sweep geometry was found on the sound pressure level.

키워드

참고문헌

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