설치각의 영향을 고려한 프로펠러 팬의 성능 평가 연구 = Study on Performance of Propeller Fan with Different Pitch Angles

다국어 초록 (Multilingual Abstract)

Flows by an axial flow fan for a cooler and performance curves of it have been investigated for both its noise reduction and improvements of aerodynamic characteristics. The present method for performance evaluation is experimental research with a wind tunnel meets Korean Standards regulations. Main interest lies on the flows on blades of the fan and those are observed by Particle Image Velocimetry system. Concave curvature of blade surface causes unwanted reverse flow along with the solid wall and this pattern of the flow results in decrease of total efficiency of fan. However, design of blade shape is very complex and sensible factor to fan performance. Another parameter for the improvements is spatial position between fan and its shroud that guides inlet flows and converts dynamic energy to pressure one. Three kinds of relative positions of fan to the shroud are examined for the purpose and proper one is obtained by experimental work. Also the improved settlement between fan and its orifice shows good fluid mechanics characteristics and rather silent motion of fan. Further work will be planned for the shape design of fan blade.

목차 (Table of Contents)

• 1. 서론
• 2. 실험 방법
• 2.1 팬 성능 실험
• 2.2 PIV 실험
• 2.3 전산해석
• 3. 결과 및 검토
• 3.1. 성능 실험
• 3.2 유동가시화 실험 (PIV 실험)
• 3.3 전산해석 결과
• 4. 결론
• 후기
• 참고문헌