Guenter Ahlers

Vortex-Front Propagation in Rotating Couette-Taylor Flow

This Letter reports experimental measurements of the velocity $v$ of a Taylor vortex front propagating into an unstable Couette state in rotating Couette-Taylor flow and of the ...

Evolution of Turbulence from the Rayleigh-Bénard Instability

Measurements of heat transport through horizontal layers of fluid heated from below are reported for three aspect ratios $\ensuremath{\Gamma} (\ensuremath{\Gamma}=\frac{D}{2d}, ...

The amplitude equation near the convective threshold: application to time-dependent heating experiments

High-resolution measurements have been performed of the convective heat current as a function of time when a Rayleigh-Bénard cell is swept through its threshold with a specified...

Low-Temperature Studies of the Rayieigh-Bénard Instability and Turbulence

Low-temperature techniques were applied to the study of a hydrodynamic instability. High-precision results for the Nusselt number $N$ as a function of the Rayleigh number $R$ fo...

The Rayleigh-Bénard Instability and the Evolution of Turbulence

In this paper we review the experimental progress that has been made in the study of the evolution of turbulence in low Prandtl number fluids confined by cylindrical containers ...

Thermal convection under external modulation of the driving force. I. The Lorenz model

Thermal convection between horizontal plates is considered for a situation in which the driving force varies periodically in time. This variation may come from changes in the te...

Convection in a Binary Mixture Heated from Below

Heat-transport measurements in a bulk normal-fluid $^{3}\mathrm{He}$-$^{4}\mathrm{He}$ mixture heated from below and over the range $\ensuremath{-}0.02\ensuremath{\lesssim}\ensu...

Wavenumber selection and Eckhaus instability in Couette-Taylor flow

Time Dependence of Flow Patterns near the Convective Threshold in a Cylindrical Container

Digitally processed shadowgraph images revealed time-dependent flow patterns slightly above the convective onset in a cylindrical cell of aspect ratio $L\ensuremath{\equiv}\frac...

Experiments with pattern-forming systems

Deterministic and stochastic effects near the convective onset

Some properties of an eight-mode Lorenz model for convection in binary fluids

We examine a number of static and dynamic properties of an eight-mode model for convection in binary mixtures proposed recently by Cross. We find that the model allows richer dy...

<i>Introduction to Phase Transitions and Critical Phenomena</i>

This is a paperback edition of a distinguished book, originally published by Clarendon Press in 1971. It was then the first text on critical phenomena, a field that has enjoyed ...