Abstract
This paper deals with experimental and numerical studies of a low-pressure turbine blade whose solidity is changeable. The purpose of this study is to clarify the effects of imcoming wakes upon the aerodynamic loss of the cascade, in particular, under low Reynols number conditions and reduced solidity condition. Cylindrical bars move in front of cascade to introduce wakes. Pneumatic probe mesurement is made to obtain total pressure loss distributions downstream of the cascade. Surface pressure distributions around cascade are measured to investigate flow field around the surface. Besides, LES simulation is also executed to investigate the ef fects of imcoming wakes for the aerodynamic loss and the boundary layer.
