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RISForced Response of a Centrifugal Compressor Stage Due to the Impeller–Diffuser Interaction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The impact mode coupling between impeller blades and the disk backwall has on the forced response amplitude of impeller blades is assessed. The assessments focus on the forced response of two splitter blade modes to a ...
Loss Generation in Transonic Turbine Blading
Publisher: The American Society of Mechanical Engineers (ASME)
Characterization and Impact of Secondary Flows in a Discrete Passage Centrifugal Compressor Diffuser
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Truncating the exit of a discrete passage centrifugal compressor diffuser is observed to enhance a research compressor's stall line. By interrogating the experimental data along with a set of well-designed Reynolds-Averaged ...
Characterization and Impact of Secondary Flows in a Discrete Passage Centrifugal Compressor Diffuser
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Truncating the exit of a discrete passage centrifugal compressor diffuser is observed to enhance a research compressor's stall line. By interrogating the experimental data along with a set of well-designed Reynolds-Averaged ...
Effects of Rotor Tip Blade Loading Variation on Compressor Stage Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Changes in loss generation associated with altering rotor tip blade loading of an embedded rotor–stator compressor stage are assessed with unsteady three-dimensional computations, complemented by control volume analyses. ...
Quantifying Loss Mechanisms in Turbine Tip Shroud Cavity Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical calculations, steady as well as unsteady, of flow in a turbine stage with a tip shroud cavity elucidate that the lossgenerating flow features consist of tip seal leakage jet, the interaction of cavity exit flow ...
Characterizing Flow Effects of Ported Shroud Casing Treatment on Centrifugal Compressor Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an investigation of the effects of ported shroud (PS) self-recirculating casing treatment used in turbocharger centrifugal compressors for increasing the operable range. The investigation consists of ...
A Framework for Estimating Effects of Combustor Turbulence on Turbine Profile Loss Generation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a framework to quantify the effect of freestream turbulence, generated by mixing processes in a combustor, on turbulent boundary layer loss generation in the high-pressure turbine downstream of the ...
Blade Loading Effects on Axial Turbine Tip Leakage Vortex Dynamics and Loss
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical simulations have been carried out to define the loss generation mechanisms associated with tip leakage in unshrouded axial turbines. Tip clearance vortex dynamics are a dominant feature of two mechanisms important ...
Performance Metric for Turbine Stage Under Unsteady Pulsating Flow Environment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In a turbine stage for a vehicular turbocharger or a pulse detonation engine (PDE) system, the power extraction process is inherently unsteady due to a highly pulsating flow delivered from the upstream combustor. Characterizing ...