http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
쉬레스트 우즈왈,김필제,최영도 한국유체기계학회 2023 한국유체기계학회 논문집 Vol.26 No.5
Regenerative blowers can produce a high head with a small flow rate, which makes them desirable compared to positive displacement pumps. The regenerative blower consists of an impeller and casing. The impeller shape contributes to the performance of the regenerative blower. CFD analysis is conducted to investigate the effect of geometrical modification on the operating condition of regenerative blowers like head, power, and efficiency. The geometry modification of the regenerative blower is achieved by varying the impeller blade curvature radius, blade inclination angle, blade shape (curved, radially straight, and chevron), and impeller disk side gap passage shape. The various impeller blades and impeller disk side gap passage designs were selected and conducted the CFD analysis to evaluate the regenerative blower performance and internal flow behavior. Study results show that changing the blade shape from curved to radially straight type can improve the blower’s performance.
재생형 블로워에서 발생하는 비정상 유동과 유동 소음 특성에 관한 연구
전완호(Wan-Ho Jeon),임태균(Tae-Gyun Lim),이경근(Kyoung-Keun Lee),장춘만(Choon-Man Jang),이상문(Sang-Moon Lee) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
This paper shows the characteristics of the unsteady flow field and aeroacoustic noise of a regenerative blower. Three-dimensional Navier-Stokes equations were applied as a numerical solution to analyze the unsteady flow field with static pressure fluctuation on the impeller and an the casing. For computational study, it was predicted that the upper part of outlet region and the tips of blades are dominant aeroacoustic noise sources in the regenerative blower. The measurement data of sound camera indicates that the dominant noise source of the regenerative blower appears in the outlet region. In this study, the position of noise source and the characteristic of noise by using numerical solution were predicted and validated through comparison between experimental data and computational ones. It is represented as fundamental data which are able to be used to reduce the noise in a regenerative blower.
심창열(Chang-Yeul Shim),홍창욱(Chang-Oug Hong),김영수(Young-Soo Kim) 한국유체기계학회 2005 유체기계 연구개발 발표회 논문집 Vol.- No.-
Parametric calculation were conducted to estimate performance of variable geometry of hydrogen recirculation blower for fuel cell vehicle. The pressure rise and efficiency are effected by change of the geometric parameter of impeller and casing, and stripper clearance under various mass flow. Hydrodynamic performance were evaluated, and also the inner flow fields were investigated by CFD. Calculated results show good coincidence with experimental test results of total pressure performance. Performance of model designed by parametric calculations satisfied experimental data of verification model.