Zobrazeno 1 - 10
of 531
pro vyhledávání: '"Lücke M"'
We present numerical simulations as well as experimental results concerning transitions between Taylor vortices and spiral vortices in the Taylor-Couette system with rigid, non-rotating end-walls in axial direction. As in the axial periodic case, the
Externí odkaz:
http://arxiv.org/abs/0909.1143
We present a few--mode Galerkin model for convection in binary fluid layers subject to an approximation to realistic horizontal boundary conditions at positive separation ratios. The model exhibits convection patterns in form of rolls and squares. Th
Externí odkaz:
http://arxiv.org/abs/0909.0860
Publikováno v:
Phys. Rev. E 78, 017303 (2008)
Previous numerical investigations of the stability and bifurcation properties of different nonlinear combination structures of spiral vortices in a counterrotating Taylor-Couette system that were done for fixed axial wavelengths are supplemented by e
Externí odkaz:
http://arxiv.org/abs/0803.3898
Publikováno v:
Phys. Rev. E 78, 015304(R), 1-4 (2008)
A novel flow state consisting of two oppositely travelling waves (TWs) with oscillating amplitudes has been found in the counterrotating Taylor-Couette system by full numerical simulations. This structure bifurcates out of axially standing waves that
Externí odkaz:
http://arxiv.org/abs/0708.4357
Publikováno v:
Phys. Rev. E 76, 015301(R) (2007).
The effect of an externally applied flow on symmetry degenerated waves propagating into opposite directions and standing waves that exchange stability with the traveling waves via mixed states is analyzed. Wave structures that consist of spiral vorti
Externí odkaz:
http://arxiv.org/abs/physics/0611132
Autor:
Huke, B., Luecke, M.
Publikováno v:
PRE vol. 67 p. 051403 (2003)
The equilibrium magnetization of concentrated ferrofluids described by a system of polydisperse dipolar hard spheres is calculated as a function of the internal magnetic field using the Born--Mayer or cluster expansion technique. This paper extends t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609058
Autor:
Huke, B., Luecke, M.
Publikováno v:
Lecture Notes in Physics 584, Thermal nonequilibrium phenomena in fluid mixtures, ed. W. Koehler and S. Wiegand, p 334 - 354 (Springer, Berlin, 2002)
We summarize our findings about laterally periodic convection structures in binary mixtures in the Rayleigh-Benard system for positive Soret effect. Stationary roll, square, and crossroll solutions and their stability are determined with a multimode
Externí odkaz:
http://arxiv.org/abs/physics/0608280
Autor:
Leschhorn, A., Lücke, M.
Publikováno v:
Z. Phys. Chem. 220 (2006) 89-96
We investigate a torsional pendulum containing a ferrofluid that is forced periodically to undergo small-amplitude oscillations. A homogeneous magnetic field is applied perpendicular to the pendulum axis. We give an analytical formula for the ferrofl
Externí odkaz:
http://arxiv.org/abs/physics/0608037
Autor:
Huke, B., Luecke, M.
We consider the bifurcation scenario that is found in Rayleigh-Benard convection of binary fluid mixtures like ethanol-water at positive separation ratios and small Lewis numbers leading to a bifurcation sequence of square, oscillatory crossroll, sta
Externí odkaz:
http://arxiv.org/abs/physics/0603203
Autor:
Matura, P., Luecke, M.
Bifurcation properties, stability behavior, dynamics, and the heat transfer of convection structures in a horizontal fluid layer that is driven away from thermal equilibrium by imposing a vertical temperature difference are compared with those result
Externí odkaz:
http://arxiv.org/abs/nlin/0601049