Squeeze Films for Rectangular Plates

1963 ◽  
Vol 85 (2) ◽  
pp. 243-246 ◽  
Author(s):  
Donald F. Hays
Keyword(s):  
Thin Film ◽  
Theoretical Analysis ◽  
Load Capacity ◽  
Surface Curvature ◽  
Squeeze Film ◽  
Rectangular Plates ◽  
Capacity Curves ◽  
Pressure Distributions ◽  
Effect Of Surface

A theoretical analysis is made of the normal approach of flat and curved rectangular plates which are separated by a thin film of lubricant. Load capacity curves are presented and some typical pressure distributions are shown. The effect of surface curvature on the squeeze film generation is investigated.

scholarly journals Numerical Solution of the MHD Reynolds Equation for Squeeze-Film Lubrication between Porous and Rough Rectangular Plates

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Ramesh B. Kudenatti ◽  
N. Murulidhara ◽  
H. P. Patil
Keyword(s):  
Pressure Distribution ◽  
Couple Stress ◽  
Reynolds Equation ◽  
Load Capacity ◽  
Roughness Parameter ◽  
Transverse Magnetic ◽  
Couple Stress Fluid ◽  
Squeeze Film ◽  
Physical Parameters ◽  
Rectangular Plates

The present theoretical study investigates the effects of surface roughness and couple-stress fluid between two rectangular plates, of which an upper rough plate has a roughness structure and the lower plate has a porous material in the presence of transverse magnetic field. The lubricant in the gap is taken to be a viscous, incompressible, and electrically conducting couple-stress fluid. This gap is separated by a film thickness H which is made up of nominal smooth part and rough part. The modified Reynolds equation in the film region is derived for one-dimensional longitudinal roughness structure and solved numerically using multigrid method. The numerical results for various physical parameters are discussed in terms of pressure distribution, load capacity, and squeeze film time of the bearing surfaces. Our results show that, the pressure distribution, load capacity and squeeze film time are predominant for larger values of Hartman number and roughness parameter, and for smaller values of couple-stress parameters when compared to their corresponding classical cases.

Hydromagnetic Squeeze Films Between Porous Rectangular Plates

1973 ◽  
Vol 95 (3) ◽  
pp. 394-398 ◽  
Author(s):  
P. C. Sinha ◽  
J. L. Gupta
Keyword(s):  
Magnetic Field ◽  
Film Thickness ◽  
Pressure Distribution ◽  
Transverse Magnetic Field ◽  
Theoretical Study ◽  
Load Capacity ◽  
Transverse Magnetic ◽  
Squeeze Film ◽  
Rectangular Plates

A theoretical study is made of the squeeze film behavior between two rectangular plates, one with a porous facing, in the presence of a uniform transverse magnetic field. Results are presented for pressure distribution, load capacity, and film thickness as functions of time. It is shown that the application of a magnetic field improves the squeeze-film action.

Non-Newtonian Squeeze Film Between Two Plane Annuli

1982 ◽  
Vol 104 (2) ◽  
pp. 275-278 ◽  
Author(s):  
A. F. Elkouh ◽  
N. J. Nigro ◽  
Y. S. Liou
Keyword(s):  
Thin Film ◽  
Power Law ◽  
Load Capacity ◽  
Parallel Plane ◽  
Squeeze Film ◽  
Squeezing Flow ◽  
Fluid Inertia ◽  
Power Law Fluid ◽  
Analytic Expressions ◽  
Time Relation

An analysis is presented for the laminar squeezing flow of an incompressible power-law fluid between parallel plane annuli. The results obtained are based on the thin-film approximation, and negligible fluid-inertia. Analytic expressions for the load capacity of the squeeze film and its thickness-time relation are presented.

scholarly journals Ferro Fluid Based Rough Porous Tilted Pad Bearing with Slip Effect

10.29007/cns9 ◽  
2018 ◽  
Author(s):  
Snehal Shukla ◽  
Gunamani Deheri
Keyword(s):  
Load Capacity ◽  
Fluid Pressure ◽  
Closed Form Solution ◽  
Form Solution ◽  
Squeeze Film ◽  
Physical Parameters ◽  
Slip Effect ◽  
Transverse Roughness ◽  
Bearing Design ◽  
Effect Of Surface

The focus of this paper is to propose an innovative mathematical model, which describes the influence of slip and transverse roughness on a hydromagnetic squeeze film in porous tilted pad bearing. The stochastic model of Christensen and Tonder is, applied to evaluate the effect of surface roughness. Beavers and Joseph slip model takes the care of slip effect. Applying these models which governing the fluid pressure; is solved for the calculation of load support. The closed form solution is, obtained for the pressure and load capacity as a function of various physical parameters. The effect of such parameters is, discussed through graphical representations. The computations indicate that slip has to be at minimum for any upgrading in the bearing design. Besides, the absence of flow fails to keep away the bearing from supporting good amount of load, which does not happen in the case of traditional lubricant.

Squeeze Films between Two Rough Rectangular Plates

1978 ◽  
Vol 20 (4) ◽  
pp. 183-188 ◽  
Author(s):  
J. Prakash ◽  
H. Christensen
Keyword(s):  
Surface Roughness ◽  
Theoretical Analysis ◽  
Analytical Solutions ◽  
Squeeze Film ◽  
Parameter Study ◽  
Rectangular Plates

The paper describes a theoretical analysis of the effects of various types of surface roughness on the response of a squeeze film between two rectangular plates of finite dimensions. Unlike other finite bearing geometries, it is possible to obtain analytical solutions for various bearing characteristics, thus facilitating a more comprehensive parameter study than has hitherto been feasible. It is shown that the nominal geometry has a profound effect on the system.

An Analysis of the Squeeze Film between Porous Rectangular Plates Including the Surface Roughness Effects

1982 ◽  
Vol 24 (1) ◽  
pp. 45-49 ◽  
Author(s):  
J. Prakash ◽  
K. Tiwari
Keyword(s):  
Surface Roughness ◽  
Aspect Ratio ◽  
Theoretical Analysis ◽  
Squeeze Film ◽  
Rectangular Plates ◽  
Roughness Effects ◽  
Fourier Expansions

The paper describes a theoretical analysis of the effects of unidirectional surface roughness on the response of a squeeze film between two porous rectangular plates of finite dimensions. The problem is solved analytically using Fourier expansions. It is shown that the nominal geometry as characterized by the aspect ratio of the plates has a profound effect on the system.

Lithium Storage in Bowl-like Carbon: The Effect of Surface Curvature and Space Geometry on Li Metal Deposition

2021 ◽  
pp. 2145-2152
Author(s):  
Weibin Ye ◽  
Lina Wang ◽  
Yichen Yin ◽  
Xinhang Fan ◽  
Yong Cheng ◽  
...  
Keyword(s):  
Surface Curvature ◽  
Metal Deposition ◽  
Lithium Storage ◽  
Space Geometry ◽  
Effect Of Surface

Effect of surface roughness on couple stress squeeze film lubrication of long porous partial journal bearings

2006 ◽  
Vol 58 (4) ◽  
pp. 176-186 ◽  
Author(s):  
N.M. Bujurke ◽  
N.B. Naduvinamani ◽  
Syeda Tasneem Fathima ◽  
S.S. Benchalli
Keyword(s):  
Surface Roughness ◽  
Couple Stress ◽  
Journal Bearings ◽  
Squeeze Film ◽  
Film Lubrication ◽  
Effect Of Surface
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