Results 161 to 170 of about 269 (192)
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Tribology International, 2021
Abstract Porous aerostatic bearings as a new type of supporting component used in ultraprecision equipment. The study of porous models is essential as they are a basis for porous aerostatic bearings. However, the effects of micropore structure and flow state inside a material have not been addressed in previous studies.
Hailong Cui
exaly +2 more sources
Abstract Porous aerostatic bearings as a new type of supporting component used in ultraprecision equipment. The study of porous models is essential as they are a basis for porous aerostatic bearings. However, the effects of micropore structure and flow state inside a material have not been addressed in previous studies.
Hailong Cui
exaly +2 more sources
An adjustable flow restrictor for implantable infusion pumps based on porous ceramics
Biomedizinische Technik, 2015AbstractThis paper describes an adjustable flow restrictor for use in gas-driven implantable infusion pumps, which is based on the resistance of a flow through a porous ceramic material. The flow inside the walls of a ceramic tube can be adjusted between 270 nl/min and 1260 nl/min by changing the flow path length in the ceramic over a distance of 14 mm.
Holger, Jannsen +2 more
exaly +3 more sources
Tribology International, 2017
Abstract Numerical and experimental research on the effects of manufacturing errors on the static performance of aerostatic porous journal bearings is presented. The effects of circumferential waviness, taper, concavity, and convexity on the bearing film thickness were modeled based on the experimental results.
Hailong Cui, Xiaobin Yue
exaly +2 more sources
Abstract Numerical and experimental research on the effects of manufacturing errors on the static performance of aerostatic porous journal bearings is presented. The effects of circumferential waviness, taper, concavity, and convexity on the bearing film thickness were modeled based on the experimental results.
Hailong Cui, Xiaobin Yue
exaly +2 more sources
Precision Engineering, 2017
Abstract In this paper, a water-lubricated hydrostatic thrust bearing with a porous land region and capillary restrictor is proposed, and the results of theoretical and experimental investigations of its static characteristics are presented. The results showed that the water-lubricated hydrostatic thrust bearing with a porous land region had good ...
Masaaki Miyatake, Shigeka Yoshimoto
exaly +2 more sources
Abstract In this paper, a water-lubricated hydrostatic thrust bearing with a porous land region and capillary restrictor is proposed, and the results of theoretical and experimental investigations of its static characteristics are presented. The results showed that the water-lubricated hydrostatic thrust bearing with a porous land region had good ...
Masaaki Miyatake, Shigeka Yoshimoto
exaly +2 more sources
International Journal of Heat and Mass Transfer, 2018
Abstract In this study, a fractal method was applied to calculate the permeability for compressible gas flow through a porous restrictor in aerostatic bearings. A mathematical permeability model without any empirical parameters was established according to the fractal theory, gas conservation equations and Darcy's Law.
Hailong Cui
exaly +2 more sources
Abstract In this study, a fractal method was applied to calculate the permeability for compressible gas flow through a porous restrictor in aerostatic bearings. A mathematical permeability model without any empirical parameters was established according to the fractal theory, gas conservation equations and Darcy's Law.
Hailong Cui
exaly +2 more sources
Numerical and experimental analysis of aerostatic thrust bearings with porous restrictors
Tribology International, 2004Abstract The finite element method is used to predict the performance of aerostatic thrust bearings with a complete porous surface. Results obtained by a 1D and 3D source flow model derived from D’Arcy’s law are compared for rectangular porous bearings having an infinite width.
T.S. Luong +4 more
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The Axisymmetric, Perfectly Flexible Foil Bearing With Porous Inlet Restrictor
Journal of Lubrication Technology, 1968The equations for the axisymmetric, perfectly flexible foil bearing are solved for the case of an externally pressurized foil with porous inlet restriction. The results are presented in graphical form for design use. For comparison, results for the axisymmetric, perfectly flexible foil bearing with discrete inlet restrictors are also given.
E. J. Barlow, M. Wildmann
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Australian Journal of Mechanical Engineering, 2019
The performance of aerostatic bearing mainly depends on the throttling effect of its restrictor.
Ruzhong Yan, Liaoyuan Wang, Shengze Wang
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The performance of aerostatic bearing mainly depends on the throttling effect of its restrictor.
Ruzhong Yan, Liaoyuan Wang, Shengze Wang
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Finite-element analysis of aerostatic lubrication with porous restrictors based on
In this article, the authors numerically analyzed the aerostatic thrust bearing with porous restrictors using the finite-element method. After the existing methods were considered, a new analysis procedure is developed for improving the efficiency and application of the finite-element analysis program.
Xiaofeng Zhang, Bin Lin, Taiyong Wang
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Cryogenics, 2004
Abstract The Planck sorption cooler cold end utilizes Joule–Thomson expansion of hydrogen to achieve temperatures below 18 K. Porous stainless steel sintered elements function as the J–T restriction. We report the flow characteristics of these porous flow restrictors, as a function of temperature over the range 19–300 K at constant pressure, and as a
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Abstract The Planck sorption cooler cold end utilizes Joule–Thomson expansion of hydrogen to achieve temperatures below 18 K. Porous stainless steel sintered elements function as the J–T restriction. We report the flow characteristics of these porous flow restrictors, as a function of temperature over the range 19–300 K at constant pressure, and as a
openaire +1 more source