TY - GEN
T1 - Investigation of skewed slot casing on transonic axial-flow fan stage
AU - Lu, Jialing
AU - Chu, Wuli
AU - Wu, Yanhui
PY - 2009
Y1 - 2009
N2 - In this paper, a highly loaded transonic fan stage, which was designed and tested by Wennerstrom in the 70's was selected to study the functions of skewed slot casing treatments. Three casings, each different in axial locations and slot directions, were designed and numerically studied by this research. Experience on optimum slot location and direction was summarized. The simulation was run by commercial CFD software Fine/Turbo. Un-steady simulations were performed on the casing treated rotors to depict the real nature of unsteadiness in a slotted casing. The rotor exit boundary conditions were set according to the parameters extracted from the stage simulation. With this condition, computational expense was much saved, and the attention was made solely focused on the slots and rotor interaction. Performance simulation at partial design speed (70% design speed) was also conducted. Unexpected performance improvement with the treated casing was observed at this speed. This unusual phenomenon was analyzed, with a corresponding explanation provided.
AB - In this paper, a highly loaded transonic fan stage, which was designed and tested by Wennerstrom in the 70's was selected to study the functions of skewed slot casing treatments. Three casings, each different in axial locations and slot directions, were designed and numerically studied by this research. Experience on optimum slot location and direction was summarized. The simulation was run by commercial CFD software Fine/Turbo. Un-steady simulations were performed on the casing treated rotors to depict the real nature of unsteadiness in a slotted casing. The rotor exit boundary conditions were set according to the parameters extracted from the stage simulation. With this condition, computational expense was much saved, and the attention was made solely focused on the slots and rotor interaction. Performance simulation at partial design speed (70% design speed) was also conducted. Unexpected performance improvement with the treated casing was observed at this speed. This unusual phenomenon was analyzed, with a corresponding explanation provided.
UR - http://www.scopus.com/inward/record.url?scp=77953221162&partnerID=8YFLogxK
U2 - 10.1115/GT2009-59417
DO - 10.1115/GT2009-59417
M3 - 会议稿件
AN - SCOPUS:77953221162
SN - 9780791848883
T3 - Proceedings of the ASME Turbo Expo
SP - 133
EP - 144
BT - Proceedings of the ASME Turbo Expo 2009
T2 - 2009 ASME Turbo Expo
Y2 - 8 June 2009 through 12 June 2009
ER -