Estimation of melt film variables during the steady-state penetration phase of thermoplastic vibration welding using a generalized newtonian fluid model

2011 ◽  
Vol 52 (3) ◽  
pp. 581-597 ◽  
Author(s):  
Bhaskar Patham ◽  
Peter H. Foss
Keyword(s):  
Steady State ◽  
Newtonian Fluid ◽  
Fluid Model ◽  
Generalized Newtonian Fluid ◽  
Vibration Welding

Steady-state rimming flow of the generalized Newtonian fluid

2002 ◽  
Vol 14 (9) ◽  
pp. 3350-3353 ◽  
Author(s):  
S. Fomin ◽  
J. Watterson ◽  
S. Raghunathan ◽  
E. Harkin-Jones
Keyword(s):  
Steady State ◽  
Newtonian Fluid ◽  
Generalized Newtonian Fluid ◽  
Rimming Flow

scholarly journals Effects of inertia in the steady state pressurised flow of a non-Newtonian fluid between two curvilinear surfaces of revolution: Rabinowitsch fluid model

2011 ◽  
Vol 32 (4) ◽  
pp. 333-349 ◽  
Author(s):  
Udaya Singh ◽  
Ram Gupta ◽  
Vijay Kapur
Keyword(s):  
Fluid Flow ◽  
Steady State ◽  
Pressure Distribution ◽  
Newtonian Fluid ◽  
Flow Rate ◽  
Fluid Model ◽  
Frictional Torque ◽  
Stress Model ◽  
Fluid Flow Rate ◽  
Surfaces Of Revolution

Effects of inertia in the steady state pressurised flow of a non-Newtonian fluid between two curvilinear surfaces of revolution: Rabinowitsch fluid modelIn many practical situations fluids are normally blended with additives (viscosity index improvers, viscosity thickeners, viscosity thinners) due to which they show pseudoplastic and dilatant nature which can be modelled as cubic stress model (Rabinowitsch model). The cubic stress model for pseudoplastic fluids is adopted because Wada and Hayashi have shown that the theoretical results with this model are in good agreement with the experimental results. The present theoretical analysis is to investigate the pseudoplastic effect along with the effect of rotational inertia on the pressure distribution, frictional torque and fluid flow rate of externally pressurised flow in narrow clearance between two curvilinear surfaces of revolution. The expression for pressure has been derived using energy integral approach. To analyse and discuss the effects of pseudoplasticity and fluid inertia on the pressure distribution, fluid flow rate and frictional torque, the examples of externally pressurised flow in the clearance between parallel disks and concentric spherical surfaces have been considered.

A Complete Solution for Thermal-Elastohydrodynamic Lubrication of Line Contacts Using Circular Non-Newtonian Fluid Model

1992 ◽  
Vol 114 (3) ◽  
pp. 540-551 ◽  
Author(s):  
Hsing-Sen S. Hsiao ◽  
Bernard J. Hamrock
Keyword(s):  
Boundary Conditions ◽  
Newtonian Fluid ◽  
Energy Equation ◽  
Control Volume ◽  
Fluid Model ◽  
Complete Solution ◽  
Circular Model ◽  
Line Contacts ◽  
Stress Boundary Conditions ◽  
Stress Boundary

A complete solution is obtained for elastohydrodynamically lubricated conjunctions in line contacts considering the effects of temperature and the non-Newtonian characteristics of lubricants with limiting shear strength. The complete fast approach is used to solve the thermal Reynolds equation by using the complete circular non-Newtonian fluid model and considering both velocity and stress boundary conditions. The reason and the occasion to incorporate stress boundary conditions for the circular model are discussed. A conservative form of the energy equation is developed by using the finite control volume approach. Analytical solutions for solid surface temperatures that consider two-dimensional heat flow within the solids are used. A straightforward finite difference method, successive over-relaxation by lines, is employed to solve the energy equation. Results of thermal effects on film shape, pressure profile, streamlines, and friction coefficient are presented.

Peristaltic Motion of a Generalized Newtonian Fluid Through a Porous Medium

2000 ◽  
Vol 69 (2) ◽  
pp. 401-407 ◽  
Author(s):  
Elsayed F. Elshehawey ◽  
Ayman M. F. Sobh ◽  
Elsayed M. E. Elbarbary
Keyword(s):  
Porous Medium ◽  
Newtonian Fluid ◽  
Peristaltic Motion ◽  
Generalized Newtonian Fluid

scholarly journals A three-dimensional steady state thermal fluid model of jumbo ingot casting during electron beam re-melting of Ti–6Al–4V

2014 ◽  
Vol 38 (14) ◽  
pp. 3607-3623 ◽  
Author(s):  
X. Zhao ◽  
C. Reilly ◽  
L. Yao ◽  
D.M. Maijer ◽  
S.L. Cockcroft ◽  
...  
Keyword(s):  
Electron Beam ◽  
Steady State ◽  
Fluid Model ◽  
Three Dimensional ◽  
Ingot Casting

A model for the stress tensor in dilute suspensions of rigid spheroids in a generalized Newtonian fluid

2019 ◽  
Vol 264 ◽  
pp. 73-84 ◽  
Author(s):  
Jan Domurath ◽  
Gilles Ausias ◽  
Julien Férec ◽  
Gert Heinrich ◽  
Marina Saphiannikova
Keyword(s):  
Stress Tensor ◽  
Newtonian Fluid ◽  
Generalized Newtonian Fluid ◽  
Dilute Suspensions

A Solution of the Elastohydrodynamic Problem for Non-Newtonian Fluids

1975 ◽  
Vol 97 (2) ◽  
pp. 303-310 ◽  
Author(s):  
D. S. Kodnir ◽  
R. G. Salukvadze ◽  
D. L. Bakashvili ◽  
V. Sh. Schwartzman
Keyword(s):  
Approximate Solution ◽  
Tangential Stress ◽  
Newtonian Fluid ◽  
Stress Reduction ◽  
Fluid Model ◽  
Lubricant Film ◽  
Newtonian Viscosity ◽  
Thermal Problem ◽  
Tangential Stresses ◽  
Theological Properties

An approximate solution of the stationary isothermal elastohydrodynamic problem has been obtained for a Ree Eyring fluid model also the solution’s algorithm is described for a non Newtonian fluid of an arbitrary model. The solution has been obtained for the complex hydrodynamic and thermal problem for the lubricant film of a non Newtonian fluid with its specified thickness and with a relative surface slip. The diagrams have been made for velocities, temperatures, and tangential stresses in the lubricant film. The solution enables the direct estimation of the tangential stress reduction caused by the non Newtonian fluid’s behavior as well as by the nonisothermal process by means of known theological properties (Newtonian viscosity and time of relaxation) with selected values of pressure and temperature as well as with a given velocity of slip, and with the help of simple nomograms.

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