Results 21 to 30 of about 807 (188)
Experimental investigation of the hydrodynamic forces on the shroud of a centrifugal pump impeller [PDF]
, 1989 Fluid-induced forces acting on a rotating impeller are known to cause rotor-dynamic problems in turbomachines. The forces generated by leakage flow along the front shroud surface of a centrifugal turbomachine impeller play an important role among these ...
Zhuang, Fei
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International Journal of Rotating Machinery, 2017 The transition process from a diffuser rotating stall to a stage stall in a centrifugal compressor with a vaned diffuser was investigated by experimental and numerical analyses. From the velocity measurements, it was found that the rotating stall existed
Nobumichi Fujisawa, Yutaka Ohta
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Active Flow Control in an Axial Compressor: Effect of the Injection Angle [PDF]
, 2022 This Thesis work has dealt with the problem of Rotating Stall in axial flow compressor. Particularly, the work was focused on active control to delay Rotating Stall appearance; this was performed by means of air injectors placed on the compressor's ...
Gatti, Giacomo
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Plume Model for Buoyancy-Induced Flow and Heat Transfer in Closed Rotating Cavities [PDF]
, 2023 The radial clearance between the rotating blades and stationary casing of a gas-turbine compressor depends on the radial growth of the rotating discs to which the blades are attached, and this growth depends on the buoyancy-induced flow and heat transfer
Tang, Hui, Owen, J. Michael
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Archives of Foundry Engineering, 2015 Turbine blades have complex geometries with free form surface. Blades have different thickness at the trailing and leading edges as well as sharp bends at the chord-tip shroud junction and sharp fins at the tip shroud.
Raza M., Irwin M., Fagerström B.
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Characteristics of rotating instability in a centrifugal blower with shrouded impeller
Transactions of the JSME (in Japanese), 2014 The Rotating instability, abbreviated to RI, in a centrifugal blower with shrouded impeller is investigated by experiments and CFD analyses. The RI occurs in a partial-flow operation of the blower prior to stall with mild fluctuations of impeller-discharge velocity and radiated noise, and appears in the power spectra as a gradual hump at almost half of
FUKUDA, Yasuyuki +2 more
openaire +3 more sources
Unsteady Flow Phenomena in Turbine Shroud Cavities
, 2020 This paper presents those flow parameters at which coherent structures appear in the blade tip cavities of shrouded turbine blades. To the authors’ knowledge, this is reported for the first time in the open literature.
Oettinger, Marcel +9 more
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Nihon Kikai Gakkai ronbunshu, 2021 Unsteady diffuser stall behavior in a centrifugal compressor with a vaneless diffuser was investigated by experimental and computational analyses. The diffuser stall generated as the mass flow rate decreased. The diffuser stall cell rotated at 25-30 % of
Nobumichi FUJISAWA +3 more
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A Theoretical Study of Ingress for Shrouded Rotating Disk Systems With Radial Outflow [PDF]
Journal of Turbomachinery, 1989 Sealing of the cavity formed between a stationary disk and a rotating disk under axisymmetric conditions is considered. A mathematical model of the flow in the cavity based on momentum integral methods is described and this is coupled to a simple model of the seal for the case when no ingress occurs.
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Blade dynamic stress analysis of rotating bladed disks [PDF]
Applied and Computational Mechanics, 2007 The paper deals with mathematical modelling of steady forced bladed disk vibrations and with dynamic stress calculation of the blades. The blades are considered as 1D kontinuum elastic coupled with three-dimensional elastic disk centrally clamped into ...
Kellner J., Zeman V.
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