Abstract

In this study, the effect of flow settling means on the performance of fan tester were numerically investigated by using a computational fluid dynamics(CFD). The airflow rate was calculated from the pressure differential across a flow nozzle in the measuring plane and the flow settling means were generally installed in the chamber of the fan tester to provide proper airflow patterns ahead of the measuring plane. The predicted nozzle differential pressures with uniform inlet velocities were compared with the values of the ANSI/AMCA 210-99 to verify the performance of the commercial CFD code CFX 5.6. The influence of flow settling means on the measurement of airflow rate in a fan tester were discussed with various porosities and inlet jet velocities. The results obtained show that the proper band of porosities exist to meet the AMCA standard in a specified inlet jet velocity.

주제어

#홴 성능시험 장치   #유동안정화 장치   #노즐   #다공성  

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참고문헌 (6)

1. ANSI/AMCA 210-99, 1999, 'Laboratory Methods of Testing Fans for Aerodynamic Performance Rating' 
2. IS0 5801, 1997, 'Industrial fans-Performance testing using standardized airways' 
3. B. Sahin and A. J. Ward-Smith, 1987, 'The use of perforated plates to control the flow emerging from a wide-angle diffuser with application to electrostatic precipitator design,' Journal of Heat Fluid Flow, Vol. 8, pp. 124-131 
4. E.M Laws and J. L. Livesey, 1978, 'Flow through screens,' Annual review of Fluid Mechanics, Vol. 10, pp. 247-266 
5. B. Sahin, 1985, 'Flow control in a wide-angle diffuser using perforated plates,' Ph. D. thesis, Department of Mechanical Engineering, Brunel University, London 
6. I.E. Idelchik, 1994, 'Handbook of hydraulic resistance' 

이 논문을 인용한 문헌 (1)

1. Im, Hyo-Jae 2007. "" 유체기계저널 = Journal of fluid machinery, 10(1): 83~84  원문보기 상세보기