양흡입 원심블로어 성능향상을 위한 입구 유동 최적화 연구

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 24; no. 4; pp. 326 - 333
• Main Authors: 이종성(Jong Sung Lee), 장춘만(Choon Man Jang), 전현준(Hyun Jun Jeon)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2013
• Subjects: 기계공학; 반응면 기법; 양흡입 원심블로어; 수치해석; Numerical simulation; Response surface method; 균일도; Double-inlet centrifugal blower; 최적 설계; Uniformity; Design optimization
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2013.24.4.326

This paper presents the performance enhancement of a double-inlet centrifugal blower by the shape optimization of an inlet duct. Two design variables, a length of anti circulation vane and an angles of inlet guide, are introduced to improve the inlet flow uniformity leading to the blower performance. Three-dimensional Navier-Stokes equations are used to analyze the blower performance and the internal flow of the blower. From the shape optimization of the inlet duct of the double-inlet centrifugal blower, the optimal positions of each design variable are determined. Throughout the analysis of sensitivity, it is found that the angle of the inlet guide is more effective than the length of the anti-circulation vane to increase flow uniformity at the outlet of the duct. Efficiency and pressure for the optimal inlet duct shape are successfully increased up to 3.55% and 3.2% compared to those of reference blower at the design flow condition, respectively. Detailed flow field inside the blower is also analyzed and compared.