Abstract
Understanding and utilization of unsteadiness associated with the flow field in turbomachines is considered very important to develop breakthrough-technologies for more efficient and environment-friendly turbomachines. This report mainly describes what unsteady flows in turbomachines are and how those unsteadinesses affects the aerodynamic performance of the turbomachines in favorable and adverse manners, followed by the description on recent progresses of computational and experimental studies to control and exploit the unsteady flows.
