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블래이드 곡률반경과 기울기가 가정용 레인지후드 시로코 팬 유동 특성에 미치는 영향 = Effects of Blade Curvature & Inclination Angle on the Flow Characteristics of a Sirocco Fan for the Residential Range Hood

자료유형: 기사

청구기호: 051 용367ㅇ

서명/저자: 블래이드 곡률반경과 기울기가 가정용 레인지후드 시로코 팬 유동 특성에 미치는 영향 = Effects of Blade Curvature & Inclination Angle on the Flow Characteristics of a Sirocco Fan for the Residential Range Hood / 조홍기

발행사항: 경기 : 용인예술과학대학교, 2023.

형태사항: pp.71-83

초록/해제: 요약 :The objective of present study is to investigate the effects of blade curvature and blade inclination angle on the flow characteristics of a sirocco fan, such as flow velocity, static pressure rise and volume flow rate by using a CFD commercial simulation program ; Star CCM+. The RANS(Reynolds Averaged Navier-Stokes) Equations with κ-ε turbulence model has been applied to analyze the three-dimensional internal flow of the sirocco fan which consisted of an impeller with 36 forward-curved blades and a scroll housing with the air inlet diameter of 154 mm and air outlet diameter of 115mm. The blade length and width is 64.5mm and 16mm, respectively. From the CFD simulation results, the velocity distribution of air passing through blades and the streamline of internal flow had been represented. It was found that re-circulation flow and vortex flow were located at the near cut-off region. The static pressure rise and volume flow rate increased as the blade curvature decreased due to the scooping mechanism originated 論文集- 72 -from the change of blade cross section. It was noted that both volume flow rate and static pressure rise improvements could be obtained, respectively, by 25.6% and 56.7% at maximum under the present simulation conditions. For the blade inclination, the volume flow rate and the static pressure rise showed best performance at the blade inclination angle of 12°.