Flow instability and transitions in Taylor–Couette flow of a semidilute non-colloidal suspension

2021 ◽  
Vol 916 ◽  
Author(s):  
Changwoo Kang ◽  
Parisa Mirbod
Keyword(s):  
Couette Flow ◽  
Flow Instability ◽  
Colloidal Suspension ◽  
Taylor Couette ◽  
Taylor Couette Flow

Abstract

Instability and pattern formation in colloidal-suspension Taylor-Couette flow

1993 ◽  
Vol 48 (4) ◽  
pp. 2880-2897 ◽  
Author(s):  
Jian-Yang Yuan ◽  
David M. Ronis
Keyword(s):  
Pattern Formation ◽  
Couette Flow ◽  
Colloidal Suspension ◽  
Taylor Couette ◽  
Taylor Couette Flow

scholarly journals Compressible Taylor–Couette flow – instability mechanism and codimension 3 points

2014 ◽  
Vol 750 ◽  
pp. 555-577 ◽  
Author(s):  
Stephanie Welsh ◽  
Evy Kersalé ◽  
Chris A. Jones
Keyword(s):  
Mach Number ◽  
Prandtl Number ◽  
Couette Flow ◽  
Flow Instability ◽  
Outer Cylinder ◽  
Reynolds Numbers ◽  
Nonlinear Behaviour ◽  
Neutral Curves ◽  
Taylor Couette ◽  
Taylor Couette Flow

AbstractTaylor–Couette flow in a compressible perfect gas is studied. The onset of instability is examined as a function of the Reynolds numbers of the inner and outer cylinder, the Mach number of the flow and the Prandtl number of the gas. We focus on the case of a wide gap, with radius ratio 0.5. We find new modes of instability at high Prandtl number, which can allow oscillatory axisymmetric modes to onset first. We also find that onset can occur even when the angular momentum increases outwards, so that the classical Rayleigh criterion can be violated in the compressible case. We have also considered the case of counter-rotating cylinders, where the $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}m=0$ and $m=1$ modes can onset simultaneously to give a codimension 2 bifurcation, leading to the formation of complex flow patterns. In compressible flow we also find codimension 3 points. The Mach number and the critical inner and outer Reynolds numbers can be adjusted so that the two neutral curves for the $m=0$ and $m=1$ modes touch rather than cross. Complex codimension 3 points occur more readily in the compressible case than in the Boussinesq case, and they are expected to lead to a rich nonlinear behaviour.

Experimental Study of Taylor-Couette Flow With Constant Radial Temperature Gradient

2009 ◽  
Author(s):  
Dong Liu ◽  
Seok-Hwan Choi ◽  
Sang-Hyuk Lee ◽  
Jung-Ho Lee ◽  
Hyoung-Bum Kim
Keyword(s):  
Temperature Gradient ◽  
Couette Flow ◽  
Flow Instability ◽  
Outer Cylinder ◽  
Taylor Vortex ◽  
Radial Temperature Gradient ◽  
Obvious Effect ◽  
Radial Temperature ◽  
Taylor Couette ◽  
Taylor Couette Flow

The flow between two concentric cylinders with the inner one rotating and with an imposed radial temperature gradient is studied using digital particle image velocimetry (DPIV) method. Four models of the outer cylinder without and with different numbers of slits (6, 9 and 18) are considered, and the radius ratio and aspect ratio of each models were 0.825 and 48, respectively. The flow regime in the Taylor-Couette flow was studied by increasing the Reynolds number. The results showed that smaller number of slits has no obvious effect on the transition process, which only change the shape of the vortex, and the transition to turbulent Taylor vortex is accelerated as the number of slit increases in both isothermal and non-isothermal conditions. It is also shown that the presence of temperature gradient increased the flow instability obviously as the Froude number larger than 0.0045.

scholarly journals Catastrophic Phase Inversion in High-Reynolds-Number Turbulent Taylor-Couette Flow

2021 ◽  
Vol 126 (6) ◽  
Author(s):  
Dennis Bakhuis ◽  
Rodrigo Ezeta ◽  
Pim A. Bullee ◽  
Alvaro Marin ◽  
Detlef Lohse ◽  
...  
Keyword(s):  
Reynolds Number ◽  
Couette Flow ◽  
Phase Inversion ◽  
High Reynolds Number ◽  
Taylor Couette ◽  
High Reynolds ◽  
Taylor Couette Flow

scholarly journals Effect of roll number on the statistics of turbulent Taylor-Couette flow

2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Rodolfo Ostilla-Mónico ◽  
Detlef Lohse ◽  
Roberto Verzicco
Keyword(s):  
Couette Flow ◽  
Taylor Couette ◽  
Taylor Couette Flow

scholarly journals Hydrodynamic synthesis of Fe2O3@MoS2 0D/2D-nanocomposite material and its application as a catalyst in the glycolysis of polyethylene terephthalate

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 16841-16848
Author(s):  
Younghyun Cha ◽  
Yong-Ju Park ◽  
Do Hyun Kim
Keyword(s):  
Aqueous Solution ◽  
Couette Flow ◽  
Polyethylene Terephthalate ◽  
Flow Reactor ◽  
Nanocomposite Material ◽  
Taylor Couette ◽  
Taylor Couette Flow

Fe2O3@MoS2 0D/2D-nanocomposite material was synthesized in an aqueous solution using a Taylor–Couette flow reactor.

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