In an axial-flow turbine of a jet engine used for aircraft propulsion, the passage vortex (PV) and tip leakage (TLV) generated inside blade deteriorate aerodynamic performance. this study, dielectric barrier discharge plasma actuator (PA) was installed in upstream endwall cascade to suppress PV. The effects presence or absence clearance change size on structure at exit were observed by recordin...

Hollow organs lined by columnar epithelial cells normally secrete mucins and their proteolytic fragments vectorially into the lumen. These heterogeneously O-glycosylated molecules are known to aberrantly enter the bloodstream in the setting of epithelial carcinomas and possibly during injury or inflammation. We have recently shown that carcinoma mucin fragments can trigger the rapid formation o...

In the typical structure of a turboshaft aero-engine, mass flow cooling air in rotor-stator cavity is controlled by inlet seal labyrinth. This study focused on swirl and heat transfer characteristics with considerations thermal deformation effect. A numerical framework was established integrating conjugate (CHT) analysis structural finite element method (FEM) to clarify two-way aero-thermo-elas...

For blade tip clearance measurement, the optical measurement method has characteristics of high precision, anti-electromagnetic interference, and non-contact measurement. A dynamic high-speed system based on time stretch dispersive Fourier transform with comb is proposed demonstrated. The experiments are designed to verify accuracy system. results show that measuring speed up 17.6 MHz errors le...

Tip leakage vortex (TLV) frequently occurring in bladed energy conversion machines may induce flow loss as well cavitation. The double-curved-hole (DC hole) structures located at the 10%–25% chord near leading edge of foil are adopted to a passive jet thus suppressing tip this paper. control effects and mechanisms three DC hole positions illustrated by numerical analyses based on rotation-curva...