Abstract: Blade failure in turbomachinery is frequently caused by an excessive resonant response. Forced response of the blades typically originates from unsteady fluid structure interactions. This paper presents the experimental ...

Abstract: Vaned diffusers in centrifugal compressor stages are used to achieve higher stage pressure ratios, higher stage efficiencies, and more compact designs. The interaction of the stationary diffuser with the impeller can lead ...

Abstract: Due to their potential to use light, flexible blades, downwind turbines are well suited for offshore floating platforms, for which there is a need to substantially lower the cost of windgenerated electricity. However, ...

Abstract: Formation of thin liquid films on steam turbine airfoils, particularly in last stages of low-pressure (LP) steam turbines, and their breakup into coarse droplets is of paramount importance to assess erosion of last stage ...

Abstract: The benefits and drawbacks of a multimegawatt downwind compared to upwind wind turbine are assessed using unsteady, threedimensional (3D) computational fluid dynamics. For the same operating conditions, the downwind turbine ...

Abstract: Full Reynoldsaveraged Navier–Stokes (RANS) simulations of the flow in the near wake of a threebladed horizontalaxis wind turbine are presented. The simulations, which are based on the model experiments in controlled ...

Abstract: In order to continue increasing the efficiency of gas turbines, a significant effort is being made to reduce losses induced by secondary flows in turbine stages. In addition to their impact on aerodynamic losses, these ...

Abstract: In order to continue increasing the efficiency of gas turbines, an important effort is made on the thermal management of the turbine stage. In particular, understanding and accurately estimating the thermal loads in a vane ...

Abstract: World literature has introduced the aerodynamic importance of unsteadiness in turbines. In particular, the unsteady static pressure field determines the work of the machine. The unsteadiness can redistribute the total ...

Abstract: This paper presents the computational methodology and experimental investigations accomplished to enhance the efficiency of a turbine stage by applying non-axisymmetric profiling on the rotor hub wall. The experimental ...