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Vibration characteristics analysis of rotating shrouded blades with impacts
Journal of Sound and Vibration, 2016Abstract A dynamic model of rotating shrouded blades with impacts among adjacent shrouded blades is established considering the effects of the centrifugal stiffening, spin softening and Coriolis force, and the model is validated using finite element method.
Hui Ma +3 more
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Flow between a stationary and a rotating disk shrouded by a co-rotating cylinder
Physics of Fluids, 1996Boundary layers on stationary and rotating disks have received much attention since von Kármán’s [Z. Angew. Math. Mech. 1, 233 (1921)] and Bödewadt’s [Z. Angew. Math. Mech. 20, 241 (1940)] studies of the cases with disks of infinite radius. Theoretical treatments have focused on similarity treatments leading to conflicting ideas about existence and ...
Wu, S.C., Chen, Y.M.
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LES Study of Flow Between Shrouded Co-rotating Disks
Flow, Turbulence and Combustion, 2013Large eddy simulations of turbulent flow between shrouded co-rotating disks, representing a simplified model of a hard disk drive, are performed. The computation domain surrounds a complete disk and is bounded at top and bottom by half a disk. Therefore, it is possible to compute the fluctuating pressure field surrounding the middle disk.
Tomoya Washizu +2 more
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Rotating Instability in a Centrifugal Blower With Shrouded Impeller
Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration, 2012Rotating instability in various types of fans, compressors, and pumps is considered as one of the symptoms of unsteady phenomena such as rotating stall or surge, and it is observed before a rotating stall as an amplitude increase in the power spectra of velocity fluctuation and/or radiated noise.
C. K. P. Kowshik +3 more
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Flow between two stationary disks and a rotating shroud
Computers & Fluids, 1991zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bellamy-Knights, P. G., Saci, R.
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Evaluation of an air shroud for rotating disk vibration suppression
2005 International Power Engineering Conference, 2005The growth trend of the recording density of hard disk drives (HDD) makes a demand for higher head positioning accuracy at faster disk rotation speed. However, the higher rotational speed of disk generates the greater flow induced vibration known as disk flutter, which causes the increase of the track misregistration (TMR). In this paper, air shroud is
J.Q. Mou, L.C. Lee, G.X. Guo
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Low noise and rotating fan and shroud assembly
The Journal of the Acoustical Society of America, 1993The present rotating fan and shroud assembly reduces noise emitted therefrom and increases cooling system efficiency. The rotating fan and shroud assembly when combined with the labyrinth-type seal also improves serviceability and reduces maintenance time and cost.
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Volume 2A: Turbomachinery, 2015
A potential means of significantly reducing the cavity exit mixing loss, a dominant primary loss mechanism in turbine tip shroud cavity flow, is assessed. The operational constraints on the turbine stage dictate that losses may only be mitigated through configuration changes within the cavity. A configuration, known herein as the Hybrid Blade, features
Timothy R. Palmer +6 more
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A potential means of significantly reducing the cavity exit mixing loss, a dominant primary loss mechanism in turbine tip shroud cavity flow, is assessed. The operational constraints on the turbine stage dictate that losses may only be mitigated through configuration changes within the cavity. A configuration, known herein as the Hybrid Blade, features
Timothy R. Palmer +6 more
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Numerical solution of laminar recirculating flow between shrouded rotating disks
Computers & Fluids, 1979Abstract In this paper we develop a method to obtain the numerical solution of the problem of recirculating flow between shrouded rotating disks. The major difficulty of this type of problem is in obtaining convergence at high Reynolds numbers. With the technique developed in this paper we have obtained convergence for Reynolds numbers up to 10,000 ...
Schultz, David H., Shah, V. L.
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Phase-resolved flow characteristics between two shrouded co-rotating disks
Experiments in Fluids, 2011Flow characteristics in the interdisk midplane between two shrouded co-rotating disks were experimentally studied. A laser-assisted particle-laden flow-visualization method was used to identify the qualitative flow behaviors. Particle image velocimetry was employed to measure the instantaneous flow velocities.
R. F. Huang, M. K. Hsieh
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