TY - GEN
T1 - Design method of meridional contours based on velocity distribution of multi-stage composite impeller
AU - Fu, Jiangfeng
AU - Tong, Li
AU - Li, Huacong
AU - Liu, Xianwei
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/7/16
Y1 - 2021/7/16
N2 - In order to deal with the integrated design problem of meridional contours of the multi-stage composite impeller, a method based on axial velocity distribution is proposed. The cubic spline curve is used to fit the shroud and hub to get the central axis of the meridional contours, and combined with the result of numerical simulation analyzing the meridional velocity distribution after obtaining the variation of the cross flow section area. Then adapting the dimensionless method to establish the constraints model that used in the design differential equations according to medial axis theory to draw the appropriate meridional contours. Research results show that: the cross flow section area of this type of impeller is not linear or parabolic distribution which is different from existing theory; crowding-out effect is the main reason of the error in meridional velocity calculation; and the design method proposed is easy to control the shape of the axial flow channel, and has practical engineering value.
AB - In order to deal with the integrated design problem of meridional contours of the multi-stage composite impeller, a method based on axial velocity distribution is proposed. The cubic spline curve is used to fit the shroud and hub to get the central axis of the meridional contours, and combined with the result of numerical simulation analyzing the meridional velocity distribution after obtaining the variation of the cross flow section area. Then adapting the dimensionless method to establish the constraints model that used in the design differential equations according to medial axis theory to draw the appropriate meridional contours. Research results show that: the cross flow section area of this type of impeller is not linear or parabolic distribution which is different from existing theory; crowding-out effect is the main reason of the error in meridional velocity calculation; and the design method proposed is easy to control the shape of the axial flow channel, and has practical engineering value.
KW - Design method
KW - Integrated combined impeller
KW - Medial axial transform
KW - Meridional contours
KW - Meridional velocity distribution
UR - http://www.scopus.com/inward/record.url?scp=85115415299&partnerID=8YFLogxK
U2 - 10.1109/ICMAE52228.2021.9522385
DO - 10.1109/ICMAE52228.2021.9522385
M3 - 会议稿件
AN - SCOPUS:85115415299
T3 - 2021 12th International Conference on Mechanical and Aerospace Engineering, ICMAE 2021
SP - 256
EP - 261
BT - 2021 12th International Conference on Mechanical and Aerospace Engineering, ICMAE 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th International Conference on Mechanical and Aerospace Engineering, ICMAE 2021
Y2 - 16 July 2021 through 19 July 2021
ER -