A semivaneless turbine stator designed to eliminate blade wakes and secondary-flow accumulations of boundary-layer air was built and tested. Performance of this, stator was evaluated with static pressures measured in the vaneless section and. surveys of total pressure and flow angle made at the, stator exit. The experimental results indicated-that the semivaneless stator set up free-vortex flow which was substantially free of circumferential gra?dients in flow angle and total pressure. Loss in total pressure across this stator was slightly greater than that measured with a conventional stator designed for the same exit flow conditions. Radial distribution of momentum loss indicated that the slight additionalloss appeared at the inner wall.
展开▼
