The investigation for influence of wake on secondary flow in a turbine cascade

The keystone of this research is an experimental investigation using a moving bar as a source of disturb ion modeling wake of blade row. The integrated losses and locations of secondary flow features have been measured using a 5-hole probe. Understanding the three-dimensional nature of these flows and understanding the interactions between the wake and the endwall flow are the key to a successful turbine design. Results from this investigation enhance this understanding and reveal strong interactions between wake and secondary flow in the blade passage. The wake has a strong influence on secondary flow and reduces its associated losses.