A Numerical Solution for the Design of Externally Pressurized Porous Gas Bearings: Thrust Bearings

1968 ◽  
Vol 90 (4) ◽  
pp. 810-817 ◽  
Author(s):  
E. P. Gargiulo ◽  
P. W. Gilmour
Keyword(s):  
Porous Media ◽  
Numerical Solution ◽  
Experimental Verification ◽  
Anisotropic Permeability ◽  
Gas Bearings ◽  
Thrust Bearings ◽  
Porous Bearing ◽  
Bearing Load ◽  
Typical Design

A numerical solution for the flow in a porous bearing is presented which includes provision for compressibility of the lubricant and anisotropic permeability of the porous media. Typical design curves for the bearing load and flow are included with experimental verification.

scholarly journals Numerical Solution of Oscillatory Motion of Dusty Visco-Elastic Fluid Through Porous Media

2011 ◽  
Vol 1 (1) ◽  
pp. 58-60
Author(s):  
Rafiuddin Ponnusamy ◽  
◽  
M.V. Ramana Murthy ◽  
Keyword(s):  
Porous Media ◽  
Numerical Solution ◽  
Oscillatory Motion ◽  
Elastic Fluid

Influence of Nanoparticles in Lubricants on the Load Capacity of Hydrostatic Thrust Bearings

2012 ◽  
Vol 486 ◽  
pp. 99-103
Author(s):  
Huei Chu Weng ◽  
Yuan Kang
Keyword(s):  
Volume Fraction ◽  
Load Capacity ◽  
Particle Volume Fraction ◽  
Closed Form Solution ◽  
Form Solution ◽  
Interparticle Interaction ◽  
Particle Volume ◽  
Thrust Bearings ◽  
Bearing Load ◽  
Thrust Pad

An analysis for the effect of nanoparticles in lubricants on load capacity is performed to study a rectangular thrust pad hydrostatic bearing with a central recess. The closed-form solution of the bearing load is derived analytically and presented for nanofluids with interparticle interaction. Results reveal that in the presence of nanoparticles, the enhanced viscosity could result in an increase in bearing load; moreover, this increase dramatically increases as particle volume fraction and/or interparticle interaction increases. The effect of nanoparticles on the bearing load can be magnified by decreasing the bearing gap.

Static and Dynamic Characteristics of Aerostatic Circular Porous Thrust Bearings (Effect of the Shape of the Air Supply Area)

2000 ◽  
Vol 123 (3) ◽  
pp. 501-508 ◽  
Author(s):  
S. Yoshimoto ◽  
K. Kohno
Keyword(s):  
Porous Material ◽  
Dynamic Characteristics ◽  
Thrust Bearing ◽  
Aerostatic Bearing ◽  
Bearing Surface ◽  
Static And Dynamic Characteristics ◽  
Thrust Bearings ◽  
Porous Bearing ◽  
Air Supply ◽  
Bearing Design

Recently, graphite porous material has been used successfully in an aerostatic bearing. In actual bearing design, it is often necessary to reduce the thickness of porous material to make the bearing smaller. However, a reduction in thickness results in a reduction in the strength of the porous material. In particular, when the diameter of porous material is large, it is difficult to supply the air through the full pad area of porous material because it deforms. Therefore, in this paper, two types of air supply method (the annular groove supply and the hole supply) in a circular aerostatic porous thrust bearing are proposed to avoid the deflection of the bearing surface. The static and dynamic characteristics of aerostatic porous bearing with these air supply methods are investigated theoretically and experimentally. In addition, the effects of a surface restricted layer on the characteristics are clarified.

Uniform Flow Field Design in Porous Media Filter Tower and Experimental Verification

2021 ◽  
Author(s):  
Hanling Mao ◽  
Siyue Li ◽  
Shun Lan ◽  
Shanshan Guo ◽  
Yuefeng Huang ◽  
...  
Keyword(s):  
Porous Media ◽  
Flow Field ◽  
Experimental Verification ◽  
Uniform Flow ◽  
Flow Field Design

Numerical solution of unsteady flow problems in porous media by spline functions

1978 ◽  
Vol 38 (1-2) ◽  
pp. 179-195 ◽  
Author(s):  
Ali H. Dogru ◽  
William Alexander ◽  
Ronald L. Panton
Keyword(s):  
Porous Media ◽  
Unsteady Flow ◽  
Numerical Solution ◽  
Spline Functions ◽  
Flow Problems
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