Abstract This work presents an experimental and numerical investigation of the laminar-turbulent transition secondary flow structures in a turbine rear structure (TRS). The study was executed at engine representative Reynolds number inlet conditions three different load cases. Experiments were performed annular rotating rig with shrouded low-pressure upstream TRS test section. results obtained ...

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Shroud devices which are typical cyclic symmetric structures widely used to reduce the vibration of turbine blades in aero engines. Asymmetric rub-impact adjacent shrouds or aerodynamic excitation forces can excite bending-torsion coupling shrouded blades, will lead complex contact motions. The aim this paper is study dynamic characteristics using a numerical method. contact-separation transiti...

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With the imminent digitalisation of manufacturing processes gas turbine components, a large volume geometric data as-manufactured parts is being generated. This can be used in aerodynamic simulations to predict component performance. Both cost and accuracy these increase with their fidelity. To efficiently exploit Digital Twin technology, one must therefore understand how realistic need give us...

Harnessing the remaining energy downstream of dams has recently gained significant attention as kinetic available in water current is considerable. This work developed a novel study to quantify gain using horizontal-axis hydrokinetic turbine with diffuser. The present assessment uses field data from Tucuruí Dam, where stream velocity 2.35 m/s at which highest extraction can occur. In this case,...

Tests were conducted to verify that new air monitoring systems at Hanford air exhaust stacks met the Draft HPS/ANSI N13.1 performance criteria developed for air sampling systems at nuclear facilities.(‘) The standard’s performance criteria address both the suitability of the air sampling probe location and the sample transport to the collection devices. The contaminants in a stack must be well ...