지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.5 No.2
- 발행연도
- 2012.6
- 수록면
- 65 - 71 (7page)
- DOI
- http://dx.doi.org/10.5293/IJFMS.2012.5.2.065
이용수
초록· 키워드
오류제보하기
The objective of the present investigation is to explore the possibility of improving the performance of a centrifugal fan at low Reynolds numbers using a simple passive means, namely Gurney flap (GF). GFs of 1/ inch brass angle (3.175 mm) corresponding to 15.9% of blade exit height or 5.1% of blade spacing at the impeller tip are attached to the impeller blade tip on the pressure surface. Performance tests are carried out on the centrifugal fan with vaneless diffuser at five Reynolds numbers (viz., 0.30, 0.41, 0.55, 0.69, , i.e., at five speeds respectively at 1,100, 1,500, 2,000, 2,500 and 3,000 rpm) without and with GF. Static pressures on the vaneless diffuser hub and shroud are also measured for each speed at four flow coefficients [=0.23 (below design flow coefficient), =0.34 (design flow coefficient), =0.45 (above design flow coefficient) and =0.60 (above design flow coefficient)] with and without GF. From the performance curves it is found that the performance of the fan improves considerably with GFs at lower Reynolds numbers and improves marginally at higher Reynolds number. Similar improvements are observed for the static pressures on the diffuser hub and shroud. The effect of Reynolds number on the performance and static pressures is considerable. However the effect is reduced with GFs.
목차
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참고문헌 (10)
참고문헌 신청
1. [학술지(정기간행물)] - Lee, T. / 2011 / PIV study of near-field tip vortex behind perforated Gurney flaps / Experiments in Fluids 50 : 351 ~ 361
2. [학술지(정기간행물)] - Lee, T. / 2011 / Lift enhancement and flow structure of airfoil with joint trailing-edge flap and Gurney flap / Experiments in Fluids 50 : 351 ~ 361
3. [학술지(정기간행물)] - Wang, J. J. / 2008 / Gurney Flap: Lift Enhancement, Mechanisms and Applications / Prog. Aerosp. Sci 44 : 22 ~ 47
4. [학술지(정기간행물)] - Byerley, A. R. / 2003 / Using Gurney Flaps to Control Laminar Separation on Linear Cascade Blades / ASME Journal of Turbomachinery 125 (1) : 114 ~ 120
5. [보고서] - Chen, P. H / 2010 / Investigation of low solidity LP turbine cascade with flow control: Part 2–Passive flow control using Gurney flap
2. [학술지(정기간행물)] - Lee, T. / 2011 / Lift enhancement and flow structure of airfoil with joint trailing-edge flap and Gurney flap / Experiments in Fluids 50 : 351 ~ 361
3. [학술지(정기간행물)] - Wang, J. J. / 2008 / Gurney Flap: Lift Enhancement, Mechanisms and Applications / Prog. Aerosp. Sci 44 : 22 ~ 47
4. [학술지(정기간행물)] - Byerley, A. R. / 2003 / Using Gurney Flaps to Control Laminar Separation on Linear Cascade Blades / ASME Journal of Turbomachinery 125 (1) : 114 ~ 120
5. [보고서] - Chen, P. H / 2010 / Investigation of low solidity LP turbine cascade with flow control: Part 2–Passive flow control using Gurney flap
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UCI(KEPA) : I410-ECN-0101-2018-554-001910989