Abstract
This paper presents the result of static pressure distribution measurements on the surfaces of endwall and rim-side wall of the nozzle ring in a low-speed axial flow turbine. equipped a rotating disc with pin blades. The measurements were performed under a constant disc cavity gap and a constant blade Reynolds number with a secondary fluid flow from the disc cavity for the location of stationary pin blades moving between one pitch of nozzle blades. The possibility of the main flow enrolment to the disc cavity was discussed through the static pressure distribution characteristics on the endwall and rim-side wall surfaces.
