Results 11 to 20 of about 135 (126)

Feasibility Analysis of Adopting the Hydrogen Hydrostatic Thrust Bearing

open access: yesApplied Sciences, 2023
The hydrogen hydrostatic thrust bearing (HHTB) is a key component of hydrogen liquefaction that impacts turbo-expander characteristics. To analyze the feasibility of using the HHTB in this application, characteristics of HHTBs were calculated using a CFD
Mingchen Qiang   +5 more
doaj   +1 more source

Numerical modelling of the flow in the annular multi-recess hydrostatic thrust bearing using CFD methods

open access: yesEPJ Web of Conferences, 2013
The current research of hydrostatic bearings and hydrostatic slide-ways is far from being over. The topic is constantly evolving, creating new geometries of the sliding bearings, developing new types of friction materials and lubricants.
Drbáková S., Kozdera M.
doaj   +1 more source

Effects of Surface Roughness and Supply Inertia on Steady Performance of Hydrostatic Thrust Bearings Lubricated with Non-Newtonian Fluids

open access: yesJournal of Mechanical Engineering, 2021
The objective of present theoretical analysis is to study the combined effects of surface roughness and fluid inertia (including the inertia of the fluid in the supply region) on the steady performance of stepped circular hydrostatic thrust bearings ...
Singh Udaya P.
doaj   +1 more source

Kugel ball nature: hydrodynamics-mathematics-design

open access: yesApplications in Engineering Science, 2022
The Kugel fountain, where a sphere sits in a fitted socket fed by a thin film of pressurized water flowing between the sphere and the socket, was treated as a bearing without referring to any mathematical or practical evidence that can support this idea.
Ahmad W.Y. Elescandarany
doaj   +1 more source

Design and Optimization of the Surface Texture at the Hydrostatic Bearing and the Spindle for High Precision Machining

open access: yesMachines, 2022
Hydrostatic bearing spindles are widely applied in high precision grinding and turning machines due to their good dynamic stability and rotational accuracy.
Youyun Shang   +3 more
doaj   +1 more source

Energetics of the Citric Acid Cycle in the Deep Biosphere

open access: yesGeophysical Monograph Series, Page 303-327., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Peter A. Canovas III, Everett L. Shock
wiley  

+1 more source

Inertia and Couple-Stress Effects in a Curvilinear Thrust Hydrostatic Bearing

open access: yesInternational Journal of Applied Mechanics and Engineering, 2017
The flow of a couple-stress lubricant in a clearance of a curvilinear thrust hydrostatic bearing with impermeable walls is considered. The flow in the bearing clearance is considered with inertia forces.
A. Walicka, P. Jurczak, J. Falicki
doaj   +1 more source

UNIVERSAL STAND FOR STUDYING SEALING AND BEARING UNITS OF COMPRESSOR MACHINES [PDF]

open access: yesAvtomobilʹnyj Transport (Harʹkov), 2018
The proposed stand is designed to test sealing and bearing units of various types, because these units, regardless of their type, require almost the same auxiliary stand systems, as well as practically the same measurement system.
Pogrebnyak A.   +2 more
doaj   +1 more source

The Structural Optimum of Hydrostatic Thrust Bearings to Avoid Cavitation

open access: yesLubricants
Cavitation of oil film is harmful for all kinds of hydrostatic bearings, so the method to avoid cavitation in hydrostatic thrust bearings by optimizing the structure of bearings is proposed in this study. Based on the pressure distribution expressions of
Huaiqing Lu   +3 more
doaj   +1 more source

Development of rotary table grinding machine for large diameter Si wafers (2nd report: Performance investigation of wheel spindle designed to govern infeed motion)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Si wafer diameter tends to be increased from 300 mm to 450 mm in order to increase semiconductor device productivity. To this end, the authors developed a rotary grinding machine with high stiffness, equipped with water hydrostatic bearings.
Jumpei KUSUYAMA   +7 more
doaj   +1 more source

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