... as lubricants because of their liquid-like behavior in sliding contacts and due to their ability to carry loads and accommodate surface velocities. The present work attempts to model a granular Couette flow using a lattice-based cellular automata computational modeling approach. Cellular automata (CA...

... rarefactions with the Poiseuille and Couette flow rate correctors. The gas film in the rotor-bearing system is modeled as stiffness and damping elements with coefficients dependent on the exciting frequency. The dynamic coefficients are then obtained by solving the linearized MMGL equations. The equations...

.... 07 10 2008 15 04 2009 01 06 2009 Couette flow Poiseuille flow seals (stoppers) turbulence turbulence roughness rough flow hydrostatic seal mechanical face seal It is well-known that several lubricated mechanisms, such as annular seals ( 1 ), hydrostatic seals...

... for asperity height, where the load capacity and friction coefficient are optimized. These optimum heights were reached at 1 – 3 μ m . Although the lip seal surface is considered to be smooth, reverse pumping can still be obtained using an oriented triangular design. The Couette flow rate for this asperity...

... of the computer code are verified by using the FLUENT and by comparing to published results for turbulent Taylor Couette flow. Numerical results of four cases including two rotational speeds with four flush rates are reported. Significant difference between the laminar and the turbulence flow in the seal chamber...

... the results corresponding to pure Couette flow and Poiseuille flow. The Reynolds number of the resulting flow based on the average velocity U m is indicated in the corresponding legend. The shear stresses of the combined Couette–Poiseuille flows are divided by the sum or the difference...

... of both the surfaces and of the oil film averaged across it were measured using an infrared emission technique. It was found that the temperature profile across the oil film varies abruptly along the sliding direction, and the Couette flow decreases due to the viscosity wedge action as the oil flow...

...Wang-Long Li A complete database for Couette flow rate ( Q C D , α 1 , α 2 , 0.1 ⩽ α 1 , α 2 ⩽ 1.0 , 0.01 ⩽ D ⩽ 100 , where D =inverse Knudsen number) for ultra-thin gas film lubrication problems is advanced. When the accommodation coefficients (AC) of the two lubricating surfaces are different α 1...

... contact tribology lubrication Couette flow laminar flow rough surfaces heat transfer thermodynamics 14 Feb 2000 06 July 2000 Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for presentation at the STLE/ASME Tribology Conference, Seattle...

...Xiaojing Wang; Zhiming Zhang; Meili Sun Flow field predictions of various turbulent lubrication models are compared with the existing experimental data of turbulent Couette flow and shear-induced countercurrent flow. [S0742-4787(00)00502-6] Contributed by the Tribology Division...

... Kang’s new database for the Poiseuille flow rate Q p and Couette flow rate Q c to solve the modified Reynolds equation for two groups of sliders, e.g., negative and positive pressure sliders (“negative” refers to sliders with subambient pressure zones). The results show that, in general, the smaller...