Journal ArticleDOI
A miniature pump with a fluid dynamic bearing
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This paper describes the development of a miniature pump having an impeller with an exit diameter of 24 mm supported with the motor rotor by a fluid dynamic bearing and shows that there is no obvious Reynolds effect for the miniature pump within the tested range of rotational speeds.Abstract:
This paper describes the development of a miniature pump having an impeller with an exit diameter of 24 mm supported with the motor rotor by a fluid dynamic bearing. Tests verify that the miniature pump is stable and quiet for rotational speeds larger than 4000 min-1. The three-dimensional turbulent flow in the entire pump flow passage and the laminar flow in the fluid dynamic bearing were then simulated numerically. The average pump performance was well predicted by the simulations. Both the tests and the simulations show that there is no obvious Reynolds effect for the miniature pump within the tested range of rotational speeds. The numerical results also show that the bearing capacity of the fluid dynamic bearing increases with the pump rotor rotational speed and the eccentricity ratio of the journal to the bushing. This pump is very compact, so it is a promising device for surgical use.read more
Citations
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Design optimization of flow channel and performance analysis for a new-type centrifugal blood pump
Ji Jingjing,Xianwu Luo,Qingyu Wu +2 more
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Static characteristic analysis on a hydrodynamic bearing of a hydraulic suspended micropump
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References
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Journal ArticleDOI
Two-equation eddy-viscosity turbulence models for engineering applications
TL;DR: In this paper, two new two-equation eddy-viscosity turbulence models are presented, which combine different elements of existing models that are considered superior to their alternatives.
Journal ArticleDOI
Impeller Geometry Suitable for Mini Turbo-Pump
TL;DR: In this article, the authors investigated the suitable impeller geometry for a mini turbo-pump, defined as the size having impeller diameter between around 5 mm and 50 mm.
Journal ArticleDOI
A novel shaft-less double suction mini pump
TL;DR: From the internal flow simulation, it was revealed that the favorable inflow condition upstream of impeller inlet could be attained by applying the double suction shaft-less design for the mini pump.
Journal ArticleDOI
Cavitation in a Shaft-less Double Suction Centrifugal Miniature Pump
TL;DR: It is believed that by applying the double suction design, the miniature pump achieved relatively uniform flow pattern upstream the impeller inlet, which is favorable for improving cavitation performance.
Journal ArticleDOI
Design optimization for a shaft-less double suction mini turbo pump
TL;DR: In this article, a shaft-less double suction mini turbo pump with outer impeller diameter of 24 mm and specific speed of 188 min-1⋅m3min-1µm has been designed.