scholarly journals Combined effect of surface roughness and micropolar fluids on squeeze film characteristics between rough flat plate and curved annular plates

2020 ◽  
Vol 8 (2) ◽  
pp. 570-575
Author(s):  
B.N. Hanumagowda ◽  
N. Chaithra ◽  
H.S. Doreswamy ◽  
A. Salma
Keyword(s):  
Surface Roughness ◽  
Flat Plate ◽  
Combined Effect ◽  
Squeeze Film ◽  
Micropolar Fluids ◽  
Annular Plates ◽  
Film Characteristics ◽  
Effect Of Surface

scholarly journals Effect of Surface Roughness and Couple Stresses on Squeeze Films between Curved Annular Plates

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Dhanapal P. Basti
Keyword(s):  
Surface Roughness ◽  
Couple Stress ◽  
Fluid Model ◽  
Stochastic Theory ◽  
Squeeze Film ◽  
Couple Stresses ◽  
Annular Plates ◽  
The Mean ◽  
Film Characteristics ◽  
Effect Of Surface

The combined effects of couple stresses and surface roughness patterns on the squeeze film characteristics of curved annular plates are studied. The Stokes (1966) couple stress fluid model is included to account for the couple stresses arising due to the presence of microstructure additives in the lubricant. In the context of Christensen's (1969) stochastic theory for the lubrication of rough surfaces, two types of one-dimensional roughness patterns (circumferential and radial) are considered. The governing modified stochastic Reynolds type equations are derived for these roughness patterns. Expressions for the mean squeeze film characteristics are obtained. Numerical computations of the results show that the circumferential roughness pattern on the curved annular plate results in more pressure buildup whereas performance of the squeeze film suffers due to the radial roughness pattern for both concave and convex pads. Further the squeeze film time is longer (shorter) for the circumferential (radial) roughness patterns. Improved squeeze film characteristics are predicted for the couple stress lubricant.

Effect of surface roughness on the couple-stress squeeze film between a sphere and a flat plate

2005 ◽  
Vol 38 (5) ◽  
pp. 451-458 ◽  
Author(s):  
N.B. Naduvinamani ◽  
P.S. Hiremath ◽  
G. Gurubasavaraj
Keyword(s):  
Surface Roughness ◽  
Flat Plate ◽  
Couple Stress ◽  
Squeeze Film ◽  
Effect Of Surface

scholarly journals Effect of Surface Roughness on the Squeeze Film Characteristics of Circular Plates in the Presence of Conducting Couplestress Fluid and Transverse Magnetic Field

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Syeda Tasneem Fathima ◽  
N. B. Naduvinamani ◽  
J. Santhosh Kumar ◽  
B. N. Hanumagowda
Keyword(s):  
Magnetic Field ◽  
Surface Roughness ◽  
Transverse Magnetic ◽  
Squeeze Film ◽  
Circular Plates ◽  
Roughness Effects ◽  
Modified Equations ◽  
Load Carrying ◽  
Film Characteristics ◽  
Effect Of Surface

The combined effect of surface roughness and magnetic field on the performance characteristic of the circular plates lubricated with conducting couplestress fluid (CCSF) has been studied. On the basis of the Christensen Stochastic model, the generalized stochastic Reynold’s equation is derived. Modified equations for the nondimensional pressure, load load-carrying capacity, and squeeze film time are derived. The results are presented both numerically and graphically and compared with conducting smooth surface case. It is observed that the surface roughness effects are more pronounced for couplestresses as compared to nonconducting Newtonian fluid (NCNF) in the presence of magnetic field.

Effect of Surface Roughness on the Squeeze Film between Rotating Porous Annular Discs

1982 ◽  
Vol 24 (3) ◽  
pp. 155-161 ◽  
Author(s):  
J. Prakash ◽  
K. Tiwari
Keyword(s):  
Surface Roughness ◽  
Squeeze Film ◽  
Operating Parameters ◽  
Wide Range ◽  
Film Characteristics ◽  
Effect Of Surface

The analysis of the squeeze film between two rotating annular discs, one with a porous facing is extended to include the effect of surface roughness. A detailed study of the squeeze film characteristics for a wide range of operating parameters is made to illustrate the effect of rotation and surface roughness and their interaction.

Sign in / Sign up

Export Citation Format

Share Document