Corrigendum to “A low Reynolds number turbulence closure for viscoelastic fluids” [Journal of Non-Newtonian Fluid Mechanics 154 (2008) 89–108]

2012 ◽  
Vol 181-182 ◽  
pp. 51
Author(s):  
F.T. Pinho ◽  
C.F. Li ◽  
B.A. Younis ◽  
R. Sureshkumar
Keyword(s):  
Reynolds Number ◽  
Fluid Mechanics ◽  
Newtonian Fluid ◽  
Low Reynolds Number ◽  
Viscoelastic Fluids ◽  
Turbulence Closure ◽  
Low Reynolds

A low Reynolds number turbulence closure for viscoelastic fluids

2008 ◽  
Vol 154 (2-3) ◽  
pp. 89-108 ◽  
Author(s):  
F.T. Pinho ◽  
C.F. Li ◽  
B.A. Younis ◽  
R. Sureshkumar
Keyword(s):  
Reynolds Number ◽  
Low Reynolds Number ◽  
Viscoelastic Fluids ◽  
Turbulence Closure ◽  
Low Reynolds

An Implicit Multigrid Scheme for the Compressible Navier-Stokes Equations With Low-Reynolds-Number Turbulence Closure

1998 ◽  
Vol 120 (2) ◽  
pp. 257-262 ◽  
Author(s):  
Peter Gerlinger ◽  
Dieter Bru¨ggemann
Keyword(s):  
Reynolds Number ◽  
Stokes Equations ◽  
Low Reynolds Number ◽  
Convergence Acceleration ◽  
Iterative Solvers ◽  
Turbulence Closure ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Low Reynolds ◽  
Turbulence Transport

A multigrid method for convergence acceleration is used for solving coupled fluid and turbulence transport equations. For turbulence closure a low-Reynolds-number q-ω turbulence model is employed, which requires very fine grids in the near wall regions. Due to the use of fine grids, convergence of most iterative solvers slows down, making the use of multigrid techniques especially attractive. However, special care has to be taken on the strong nonlinear turbulent source terms during restriction from fine to coarse grids. Due to the hyperbolic character of the governing equations in supersonic flows and the occurrence of shock waves, modifications to standard multigrid techniques are necessary. A simple and effective method is presented that enables the multigrid scheme to converge. A strong reduction in the required number of multigrid cycles and work units is achieved for different test cases, including a Mack 2 flow over a backward facing step.

Numerical shape optimization in Fluid Mechanics at low Reynolds number

2019 ◽  
Author(s):  
Alexis Courtais ◽  
Francois Lesage ◽  
Yannick Privat ◽  
Pascal Frey ◽  
Abderrazak M. Latifi
Keyword(s):  
Reynolds Number ◽  
Fluid Mechanics ◽  
Shape Optimization ◽  
Low Reynolds Number ◽  
Low Reynolds

Efficient mixing of viscoelastic fluids in a microchannel at low Reynolds number

2006 ◽  
Vol 3 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Hiong Yap Gan ◽  
Yee Cheong Lam ◽  
Nam Trung Nguyen ◽  
Kam Chiu Tam ◽  
Chun Yang
Keyword(s):  
Reynolds Number ◽  
Low Reynolds Number ◽  
Viscoelastic Fluids ◽  
Low Reynolds

Fluid Mechanics of Longitudinal Contractions in the Small Intestine

1979 ◽  
Vol 101 (4) ◽  
pp. 284-288 ◽  
Author(s):  
J. G. Melville ◽  
N. Denli
Keyword(s):  
Reynolds Number ◽  
Small Intestine ◽  
Motor Activity ◽  
Fluid Mechanics ◽  
Low Reynolds Number ◽  
Retrograde Flow ◽  
Particle Trajectories ◽  
Low Reynolds

Longitudinal contractions in the duodenum are shown to exit experimentally. A low Reynolds number model of flows induced by propagating longitudinal contractions is presented for circular conduits. Particle trajectories and time lines are shown to elucidate the flowfields. Longitudinal motor activity is shown to have the capability of satisfying the mixing function of the small intestine and to be a possible contributor of retrograde flow.

A Theoretical Model for the Transverse Impingement of Free Jets at Low Reynolds Numbers

1980 ◽  
Vol 102 (4) ◽  
pp. 510-518 ◽  
Author(s):  
R. Winton ◽  
H. R. Martin
Keyword(s):  
Reynolds Number ◽  
Theoretical Model ◽  
Fluid Mechanics ◽  
Low Reynolds Number ◽  
Reynolds Numbers ◽  
Exit Plane ◽  
Suction Force ◽  
Free Jets ◽  
Low Reynolds Numbers ◽  
Low Reynolds

There are many applications in industrial fluid mechanics and fluidic technology where jets of fluid interact. This paper examines the interaction of two liquid laminar free jets under low Reynolds number conditions and particularly highlights the phenomenon of the inwards deflecting jet. A potential flow solution is developed for the modelling of the control jet flow in the vicinity of the control nozzle exit plane, which demonstrates the presence of a net suction force modifying the momentum interaction of the two orthogonal jets under these low Reynolds number conditions.

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