Fluid Dynamics
Plastics technology involves manipulating resins and additives to form useful structures. This requires movement and mixing of components in an effective way. Fluids and fluid flow are the basis of this process involving mass, energy and momentum transfer. This is fluid dynamics and everyone working in plastics must in one way or another deal with its implications of fluid dynamics. (RDC 10/22/2010)
An Introduction to Fluid Dynamics by Nick Schott (10/22/2010)
Processing
Shear Stress
Vortex Tube /Ranque-Hilsch Vortex Tube
Weber Number
Recent Journal Articles
12/03/2010
Effects of Slip on Unsteady Mixed Convective Flow and Heat Transfer Past a Stretching Surface
(# 124401) Chinese Physics Letters 27 #12 (2010)
Mukhopadhyay of The University of Burdwan, India studied the unsteady mixed convective boundary layer flow and heat transfer over a stretching vertical surface in the presence of slip. The fluid velocity decreases due to the increasing velocity slip parameter resulting in an increase in the temperature field. The rate of heat transfer decreases with the velocity slip parameter while it increases with unsteadiness parameter. (RDC 12/6/2010)
Slip Magnetohydrodynamic Viscous Flow over a Permeable Shrinking Sheet
(# 124702) Chinese Physics Letters 27 #12 (2010)
Tie-Gang et al of North Carolina State University solved the Navier-Stokes equations for The magnetohydrodynamic flow under slip conditions over a shrinking sheet is solved analytically. (RDC 12/6/2010) Chinese Physics Letters 27 #12 (2010)
Droplet relaxation in blends with one viscoelastic component: bulk and confined conditions
(941-951) Rheologica Acta 49 #9 (2010)
Cardinaels and Moldenaers of the Catholic University of Leuven, Belgium studied the shape relaxation of deformed droplets in a quiescent matrix using a counter rotating parallel plate shear flow cell. They found that viscoelasticity of the droplet has no influence on shape relaxation, whereas matrix viscoelasticity and geometrical confinement result in a slower droplet retraction. A phenomenological model predicts additive effects of geometrical confinement and component viscoelasticity, the experimental data reveal more complex interactions. (RDC 11/20/2010)
Effects of Slip on Unsteady Mixed Convective Flow and Heat Transfer Past a Stretching Surface
(# 124401) Chinese Physics Letters 27 #12 (2010)
Mukhopadhyay of The University of Burdwan, India studied the unsteady mixed convective boundary layer flow and heat transfer over a stretching vertical surface in the presence of slip. The fluid velocity decreases due to the increasing velocity slip parameter resulting in an increase in the temperature field. The rate of heat transfer decreases with the velocity slip parameter while it increases with unsteadiness parameter. (RDC 12/6/2010)
Slip Magnetohydrodynamic Viscous Flow over a Permeable Shrinking Sheet
(# 124702) Chinese Physics Letters 27 #12 (2010)
Tie-Gang et al of North Carolina State University solved the Navier-Stokes equations for The magnetohydrodynamic flow under slip conditions over a shrinking sheet is solved analytically. (RDC 12/6/2010) Chinese Physics Letters 27 #12 (2010)
Review Articles
11/19/2010
Models for the deformation of a single ellipsoidal drop: a review
(789-806) Rheologica Acta 49 #8 (2010)
Minale of Seconda Università di Napoli, Italy shows how drop dynamics can give valuable insight into dilute polymer blends but this depends on the theories behind the interpretation. Four different systems are reviewed: the Newtonian system, where a single Newtonian drop is immersed in an infinite Newtonian matrix; the non-Newtonian system, where at least one of the components, the drop fluid or the matrix one, is non-Newtonian; the confined Newtonian system, where the matrix is confined and wall effects alter the drop dynamics; and the confined non-Newtonian system. (RDC 11/20/2010)