Results 21 to 30 of about 578 (184)

Paradoxical transitions to instabilities in hydromagnetic Couette-Taylor flows [PDF]

Physical Review E, 2011
By methods of modern spectral analysis, we rigorously find distributions of eigenvalues of linearized operators associated with an ideal hydromagnetic Couette-Taylor flow. Transition to instability in the limit of vanishing magnetic field has a discontinuous change compared to the Rayleigh stability criterion for hydrodynamical flows, which is known as
Kirillov, O. N., Pelinovsky, D. E., Schneider, G.   +2 more
openaire   +4 more sources

Mechanism of Vortices Appearance in the Taylor-Couette Flow System [PDF]

Journal of Applied Fluid Mechanics, 2022
This work is devoted to study the Taylor-Couette flow at the early structuring stages. It is aimed to gain insight on the Taylor and Ekman vortices genesis mechanism since the first hints of presence detected at Ta=10-4. Simulations are carried out using
M. Khirennas, H. Oualli, M. Mekadem, T. Azzam, A. Benaiche, A. Bouabdallah   +5 more
doaj   +1 more source

Experiments on the Couette-Taylor flow with an Axial Flow

, 1991
Couette-Taylor flow between cylinders with a superimposed axial flow is studied experimentally. The axial flow suppresses the basic stationary instability and gives rise to travelling waves in the form of propagating Taylor Vortices (TV) at low through flow velocity (Re 1 patterns in the form of TV with modulated amplitude exist below this line.
Tsameret, A, Steinberg, V
openaire   +2 more sources

Numerical Study of the Effect of a Power-law Fluid Flow Structures on Levels of Mixing in a Taylor Couette Configuration [PDF]

Journal of Applied Fluid Mechanics, 2023
This work is a numerical study on the effects of the flow structures of the power-law fluid between two concentric cylinders with an upward laminar axial flow on levels of mixing and mean residence time through the Taylor Couette system.
S. Khali, R. Nebbali
doaj   +1 more source

PIV Investigation of Couette-Taylor Flows With Axial Flows [PDF]

Volume 1: Symposia, 2015
The Couette Taylor flows CTF strongly depend on geometrical characteristics of CT systems radio and aspect ratios. The superposition of axial flow may accentuate this dependence. Previous studies carried with relatively small radial and/or aspect ratios [1–3] or relatively low Taylor numbers (or rotational Reynolds number ReΩ) and/or low axial flux ...
Emna Berrich, Fethi Aloui, Jack Legrand
openaire   +1 more source

Hydrodynamic education with rheoscopic fluid [PDF]

EPJ Web of Conferences, 2019
We present a educational poster supporting the subject „Mechanics of fluids I“, which the students evaluate to be difficult mainly due to abstractness. Our goal is to show in vivo the behavior, especially the non-linearity, of various flows transiting into
Duda Daniel, Klimko Marek, Škach Radek, Uher Jan, Uruba Václav   +4 more
doaj   +1 more source

The behaviour of Couette-Taylor flow in an azimuthal plane [PDF]

Journal of Physics: Conference Series, 2008
We investigated the behaviour of Couette-Taylor flow in an azimuthal cross section by flow visualization using Kalliroscope flakes, and by image analysis of the obtained movie. Kalliroscope flakes are platelet and can make shear flow visible. Wavy vortex flow mode (WVF) in which an azimuthal wave mode superposes Taylor vortex flow mode (TVF) was ...
Yuuta Nomura, Yuji Tasaka, Yuichi Murai, Yasushi Takeda   +3 more
openaire   +1 more source

Heat transfer enhancement and torque reduction by traveling wave-like blowing and suction in turbulent Taylor-Couette flow

Journal of Thermal Science and Technology, 2021
Direct numerical simulations of turbulent Taylor-Couette flows are performed to investigate the effect of a traveling wave control on torque and heat transfer. In the Taylor-Couette flow, inner and outer cylinders are rotating and immobile, respectively,
Hiroya MAMORI, Koji FUKUDOME, Kohei OGINO, Naoya FUKUSHIMA, Makoto YAMAMOTO   +4 more
doaj   +1 more source

Application of a Taylor-Couette Reactor in Homogeneous Catalysis

Chemical Engineering Transactions, 2015
New developments of synthesis routes in homogeneous catalysis often require a precise control of the reaction conditions in order to achieve optimal results.
A. Behr, T. Farber
doaj   +1 more source

Effect of Rib Configuration on Axial Mass Transport in Taylor–Couette Flow

Journal of Chemical Engineering of Japan
In this study, the effects of rib configuration on flow structure and axial mass transport in Taylor–Couette flow were investigated using computational fluid dynamics.
Hayato Nakagawa, Hayato Masuda, Hiroyuki Iyota   +2 more
doaj   +1 more source