Viscous Flow in a Controlled Diffusion Compressor Cascade With Increasing Incidence
Keyword(s):
A detailed two-component LDV mapping of the flow through a controlled diffusion compressor cascade at low Mach number (∼0.25) and Reynolds number of about 7×105, at three inlet air angles from design to near stall, is reported. It was found that the suction side boundary layer reattached turbulent after a laminar separation bubble, and remained attached to the trailing edge even at the highest incidence, at which losses were 3 to 4 times the minimum value for the geometry. Boundary layer thickness increased to fill 20% of the blade passage at the highest incidence. Results for pressure-side boundary layer and near wake are also summarized. Information sufficient to allow preliminary assessment of viscous codes is tabulated.
Keyword(s):
2020 ◽
Vol 12
(3)
◽
Flow control in linear compressor cascades by inclusion of suction side dimples at varying locations
2018 ◽
Vol 232
(6)
◽
pp. 706-721
◽