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Unsteady Flow and Whirl-Inducing Forces in Axial-Flow Compressors: Part I—Experiment [PDF]
Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, 2000 An experimental and theoretical investigation has been conducted to evaluate the effects seen in axial-flow compressors when the centerline of the rotor is displaced from the centerline of the static structure of the engine.
Beacher, B. F. +7 more
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Pre-Whirl Flow and Its Control in a Cross Flow Fan
Journal of Fluid Science and Technology, 2013 In a previous paper, the effect of angle and length of the inlet guide vane on the performance of a cross-flow fan was examined. By installing a guide vane having one sheet in the tongue division side in the suction region, the performance of the cross ...
Rei NAKAMURA +3 more
doaj +3 more sources
Scaling laws of flow structures around geometrically similar fire whirls
Journal of Thermal Science and Technology, 2019 This paper discusses the scaling laws of the flow structures around geometrically similar fire whirls, an insight that will be necessary when applying laboratory-scale data to real-scale fire whirls in urban or wildland fires.
Rikiya YAMADA, Kazunori KUWANA
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Unstable outer cylinder whirl of concentric double rotating cylinder system
Mechanical Engineering Journal, 2023 This research investigates unstable outer cylinder whirl in a double rotating cylinder system, with both co- and counter-rotation, in which the axis of the outer cylinder is supported elastically in the radial direction and the axis of the inner cylinder
Fumitaka YOSHIZUMI, Masanori IRITANI
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Comparison of the Flow Inside Whirling and Non‐Whirling Smooth Annular Seals at 50% Eccentricity [PDF]
International Journal of Rotating Machinery, 2002 The flow field inside whirling (whirl ratio51) and non-whirling seals can be dramatically different. The statically eccentric seal is dominated by viscous drag which is responsible for generating the azimuthal velocity inside the seal and the turbulence. Conversely, the whirling seal produces the azimuthal velocity component by pushing the fluid by the
Gerald L. Morrison +2 more
openaire +2 more sources
Experimental Study on Vibration of a Rotating Pipe in Still Water and in Flow
Polish Maritime Research, 2023 To illustrate the vibration characteristics of a rotating pipe in flow, experiments were conducted for a pipe in flow, a rotating pipe in still water and a rotating pipe in flow. For the pipe in flow without rotation, the trajectory diagram is ‘8’ shaped.
Geng Xinge +5 more
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Unstable inner cylinder whirl of concentric double rotating cylinder system
Mechanical Engineering Journal, 2022 This research investigated unstable inner cylinder whirl in a double rotating cylinder system in which the axis of the inner cylinder is supported elastically in the radial direction and the axis of the outer cylinder is fixed.
Fumitaka YOSHIZUMI, Masanori IRITANI
doaj +1 more source
Simulation and Flow Analysis of the Hole Diaphragm Labyrinth Seal at Several Whirl Frequencies
Energies, 2022 The seal is designed to reduce leakage and improve the efficiency of gas turbine machines, and is an important technology that needs to be studied in gas turbine design. A series of seals were proposed to try to achieve this goal.
Xiang Zhang +4 more
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International Journal of Naval Architecture and Ocean Engineering, 2020 The whirl and generated forces of rotating cylinders with different diameters placed in still water and in flow are studied experimentally. For the rotating cylinders in still water, the Same Frequency Whirl (SFW) and Different Frequency Whirl (DFW) have
Wei Chen +3 more
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Journal of Marine Science and Engineering, 2023 With the continuous depletion of fossil fuels, all countries attach importance to clean and sustainable development. The real-time state monitoring of multiphase flows is vital for enhancing hydropower station energy conversion.
Qing Yan +3 more
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