Bibliografias temáticas / Couette Plan Annulaire

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Literatura científica selecionada sobre o tema "Couette Plan Annulaire"

Autor: Grafiati
Publicado: 12 de abril de 2025
Última modificação: 31 de julho de 2025

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Artigos de revistas sobre o assunto "Couette Plan Annulaire"

1

Tuckerman, Laurette S., Matthew Chantry, and Dwight Barkley. "Patterns in Wall-Bounded Shear Flows." Annual Review of Fluid Mechanics 52, no. 1 (2020): 343–67. http://dx.doi.org/10.1146/annurev-fluid-010719-060221.

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Experiments and numerical simulations have shown that turbulence in transitional wall-bounded shear flows frequently takes the form of long oblique bands if the domains are sufficiently large to accommodate them. These turbulent bands have been observed in plane Couette flow, plane Poiseuille flow, counter-rotating Taylor–Couette flow, torsional Couette flow, and annular pipe flow. At their upper Reynolds number threshold, laminar regions carve out gaps in otherwise uniform turbulence, ultimately forming regular turbulent–laminar patterns with a large spatial wavelength. At the lower threshold
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Takeda, Kazuki, Yohann Duguet, and Takahiro Tsukahara. "Intermittency and Critical Scaling in Annular Couette Flow." Entropy 22, no. 9 (2020): 988. http://dx.doi.org/10.3390/e22090988.

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The onset of turbulence in subcritical shear flows is one of the most puzzling manifestations of critical phenomena in fluid dynamics. The present study focuses on the Couette flow inside an infinitely long annular geometry where the inner rod moves with constant velocity and entrains fluid, by means of direct numerical simulation. Although for a radius ratio close to unity the system is similar to plane Couette flow, a qualitatively novel regime is identified for small radius ratio, featuring no oblique bands. An analysis of finite-size effects is carried out based on an artificial increase o
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PENG, JIE, and KE-QIN ZHU. "Linear instability of two-fluid Taylor–Couette flow in the presence of surfactant." Journal of Fluid Mechanics 651 (March 24, 2010): 357–85. http://dx.doi.org/10.1017/s002211200999406x.

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The effect of an insoluble surfactant on the centrifugal and shear instability of a pair of radially stratified immiscible liquids in the annular gap between concentric two-fluid Taylor–Couette flow is investigated by a normal-mode linear analysis and complementary energy analysis. The interface is assumed to be concentric with the cylinders. The gravitational effects are ignored. Influences of density and viscosity stratification, surface tension, surfactant concentration distribution and Taylor–Couette shearing are considered comprehensively. The instability characteristics due to competitio
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BERGERON, K., E. A. COUTSIAS, J. P. LYNOV, and A. H. NIELSEN. "Dynamical properties of forced shear layers in an annular geometry." Journal of Fluid Mechanics 402 (January 10, 2000): 255–89. http://dx.doi.org/10.1017/s0022112099006837.

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Results of numerical simulations of a forced shear flow in an annular geometry are presented. The particular geometry used in this work reduces the effects of centrifugal and Coriolis forces. However, there are still a large number of system parameters (shear width, shear profile, radius of curvature, initial conditions, etc.) to characterize. This set of variables is limited after the code has been validated with experimental results (Rabaud & Couder 1983; Chomaz et al. 1988) and with the associated linear stability analysis. As part of the linear stability characterization, the pseudo-sp
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Wang, B., F. Mellibovsky, R. Ayats, K. Deguchi, and A. Meseguer. "Mean structure of the supercritical turbulent spiral in Taylor–Couette flow." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 381, no. 2246 (2023). http://dx.doi.org/10.1098/rsta.2022.0112.

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The large-scale laminar/turbulent spiral patterns that appear in the linearly unstable regime of counter-rotating Taylor–Couette flow are investigated from a statistical perspective by means of direct numerical simulation. Unlike the vast majority of previous numerical studies, we analyse the flow in periodic parallelogram-annular domains, following a coordinate change that aligns one of the parallelogram sides with the spiral pattern. The domain size, shape and spatial resolution have been varied and the results compared with those in a sufficiently large computational orthogonal domain with
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An, Xinliang, Taoran He, and Te Li. "Nonlinear Asymptotic Stability and Transition Threshold for 2D Taylor–Couette Flows in Sobolev Spaces." Communications in Mathematical Physics 405, no. 6 (2024). http://dx.doi.org/10.1007/s00220-024-05022-6.

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AbstractIn this paper, we investigate the stability of the 2-dimensional (2D) Taylor–Couette (TC) flow for the incompressible Navier–Stokes equations. The explicit form of velocity for 2D TC flow is given by $$u=(Ar+\frac{B}{r})(-\sin \theta , \cos \theta )^T$$ u = ( A r + B r ) ( - sin θ , cos θ ) T with $$(r, \theta )\in [1, R]\times \mathbb {S}^1$$ ( r , θ ) ∈ [ 1 , R ] × S 1 being an annulus and A, B being constants. Here, A, B encode the rotational effect and R is the ratio of the outer and inner radii of the annular region. Our focus is the long-term behavior of solutions around the stea
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Zhong, Jun, Dongpu Wang, and Chao Sun. "From sheared annular centrifugal Rayleigh–Bénard convection to radially heated Taylor–Couette flow: exploring the impact of buoyancy and shear on heat transfer and flow structure." Journal of Fluid Mechanics 972 (October 2, 2023). http://dx.doi.org/10.1017/jfm.2023.730.

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We investigate the coupling effect of buoyancy and shear based on an annular centrifugal Rayleigh–Bénard convection (ACRBC) system in which two cylinders rotate with an angular velocity difference. Direct numerical simulations are performed in a Rayleigh number range $10^6\leq Ra\leq 10^8$ , at fixed Prandtl number $Pr=4.3$ , inverse Rossby number $Ro^{-1}=20$ , and radius ratio $\eta =0.5$ . The shear, represented by the non-dimensional rotational speed difference $\varOmega$ , varies from $0$ to $10$ , corresponding to an ACRBC without shear and a radially heated Taylor–Couette flow with onl
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Teses / dissertações sobre o assunto "Couette Plan Annulaire"

1

Macadre, Remi. "Étude expérimentale d'émulsions d'eau-dans-huile denses dans un écoulement Couette Plan Annulaire." Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSEP110.

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L'extraction sous-marine du pétrole inclut le transport d'émulsions eau-dans-huile (E/H) concentrées, stabilisées par des tensioactifs naturellement solubles dans le pétrole, et transporté dans des pipelines horizontaux sur de longues distances, jusqu'à 50 km. En raison de ces longs séjours, les configurations d'écoulement sont susceptibles de passer d'un état entièrement stratifié à un état entièrement dispersé ou vice-versa. Ces transitions sont induites par des processus tels que la sédimentation, la migration induite par le cisaillement et la coalescence. Ces processus sont influencés par
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