Viscoelastic planar elongational flow past an infinitely long cylinder

2019 ◽  
Vol 31 (3) ◽  
pp. 033104 ◽  
Author(s):  
Evgenios A. Gryparis ◽  
Spyros D. Gkormpatsis ◽  
Kostas D. Housiadas ◽  
Roger I. Tanner
Keyword(s):  
Elongational Flow ◽  
Flow Past ◽  
Planar Elongational Flow ◽  
Long Cylinder

scholarly journals Communication: A coil-stretch transition in planar elongational flow of an entangled polymeric melt

2018 ◽  
Vol 148 (14) ◽  
pp. 141103 ◽  
Author(s):  
Mohammad H. Nafar Sefiddashti ◽  
Brian J. Edwards ◽  
Bamin Khomami
Keyword(s):  
Elongational Flow ◽  
Planar Elongational Flow

An Analysis of Axisymmetric Turbulent Flow Past a Long Cylinder

1972 ◽  
Vol 94 (1) ◽  
pp. 200-204 ◽  
Author(s):  
F. M. White
Keyword(s):  
Boundary Layer ◽  
Shape Factor ◽  
Boundary Layer Thickness ◽  
Axial Flow ◽  
Reynolds Numbers ◽  
Small Radius ◽  
Law Of The Wall ◽  
Curvature Effects ◽  
Flow Past ◽  
Long Cylinder

An analysis is presented which predicts the properties of an arbitrarily thick turbulent boundary layer for incompressible axial flow past a long cylinder. The approach makes use of a modified form of the law-of-the-wall, deduced by G. N. V. Rao, which properly accounts for transverse curvature effects. Using this law, the theory which follows is equivalent to an exact solution to the axisymmetric equations of continuity and momentum for zero pressure gradient. Numerical results show that curvature increases skin friction and overall drag and decreases the boundary layer thickness and the integral thicknesses. The velocity profile is flattened and the shape factor approaches unity at large curvature. Comparison with several sources of friction data show better overall agreement than previous theories, except for an unexplained discrepancy with data for moving nylon fibers at very small radius Reynolds numbers.

Molecular dynamics simulation of planar elongational flow in a nematic liquid crystal based on the Gay–Berne potential

2015 ◽  
Vol 17 (5) ◽  
pp. 3332-3342 ◽  
Author(s):  
Sten Sarman ◽  
Aatto Laaksonen
Keyword(s):  
Molecular Dynamics ◽  
Liquid Crystal ◽  
Molecular Dynamics Simulation ◽  
Boundary Conditions ◽  
Nematic Liquid Crystal ◽  
Equations Of Motion ◽  
Elongational Flow ◽  
Dynamics Simulation ◽  
Planar Elongational Flow

Simulation of a nematic liquid crystal undergoing elongational flow using the SLLOD equations of motion with Kraynik–Reinelt boundary conditions.

Sign in / Sign up

Export Citation Format

Share Document