Experimental and theoretical progress in pipe flow transition. (2009)
A. P. Willis, J. Peixinho, R. R. Kerswell, T. Mullin
There have been many investigations of the stability of Hagen–Poiseuille flow in the one hundred and twenty five years since Osborne Reynolds ’ famous experiments on the transition to turbulence...
Stress dip under a two-dimensional semipile of grains (2008)
Zuriguel, I., Mullin, T., Arévalo, R.
The origin of stress dip under the apex of a standard sandpile has stimulated significant debate within the scientific community. On the other hand, it could be argued that a semipile built against a...
Stress dip under a two-dimensional semipile of grains (2008)
Zuriguel, I., Mullin, T., Arévalo, R.
The origin of stress dip under the apex of a standard sandpile has stimulated significant debate within the scientific community. On the other hand, it could be argued that a semipile built against a...
Complex Motion of Brownian Particles with Energy Supply (2007)
D. S. Broomhead, E. A. Luchinskaya, T. Mullin, Werner Ebeling, Udo Erdmann, ...
We study a model of Brownian particles which are pumped with energy by means of a nonlinear friction function. Analytical solutions of the corresponding Fokker-Planck equation are presented and...
Pattern selection by a granular wave in a rotating drum (2006)
Zuriguel, I., Peixinho, J., Mullin, T.
The results of an experimental investigation of granular segregation in a thin rotating drum are presented. A mechanism based on the presence of an uphill wave of particles has been found to govern...
Magnetohydrodynamic damping of oscillations in low-Prandtl-number convection (2005)
Hof, B., Juel, Anne, Mullin, T.
We present the results of an experimental investigation of the effect of a magnetic field on the stability of convection in a liquid metal. A rectangular container of gallium is subjected to a...
in the motion of spheres in (2005)
T. Mullin, Y. Li, C. Del Pino, J. Ashmore
doi:10.1093/imamat/hxh085
An experimental study of fixed points and chaos in the motion of spheres in a Stokes flow (2005)
Mullin, T., Li, Y., Pino, C. Del, Ashmore, J.
We present the results of an investigation of a novel dynamical system in which one, two or three solid spheres are free to move in a horizontal rotating cylinder which is completely filled with a...
An experimental study of fixed points and chaos in the motion of spheres in a Stokes flow (2005)
Mullin, T., Li, Y., Pino, C. Del, Ashmore, J.
We present the results of an investigation of a novel dynamical system in which one, two or three solid spheres are free to move in a horizontal rotating cylinder which is completely filled with a...
On the onset of oscillatory convection in molten gallium (2004)
Hof, B., Juel, Anne, Zhao, L., Ben Hadid, H., Henry, D., Mullin, T.
The results of experimental and numerical investigations of the onset of oscillatory convection in a sidewall heated rectangular cavity of molten gallium are reported. Detailed comparisons are made...
On the onset of oscillatory convection in molten gallium (2004)
Hof, B., Juel, A., Zhao, L., Henry, Daniel, Ben Hadid, H., Mullin, T.
The results of experimental and numerical investigations of the onset of oscillatory convection in a sidewall heated rectangular cavity of molten gallium are reported. Detailed comparisons are made...
On the onset of oscillatory convection in molten gallium (2004)
Hof, B., Juel, A., Zhao, L., Henry, Daniel, Ben Hadid, H., Mullin, T.
The results of experimental and numerical investigations of the onset of oscillatory convection in a sidewall heated rectangular cavity of molten gallium are reported. Detailed comparisons are made...
Segregation phases in a vibrated binary granular layer (2003)
Reis, P. M., Ehrhardt, G., Mullin, T.
We present the results of an experimental study of patterned segregation in a horizontally shaken shallow layer of a binary mixture of dry particles. As the compacity, $C$, of the mixture was...
Gases, liquids and crystals in granular segregation (2003)
Reis, P. M., Ehrhardt, G., Stephenson, A., Mullin, T.
We report the results of an experimental investigation of segregation in a binary mixture of dry particles subjected to horizontal oscillatory excitation. The thin layer of particles was driven by...
Scaling of the turbulence transition threshold in a pipe (2003)
We report the results of an experimental investigation of the transition to turbulence in a pipe over approximately an order of magnitude range in $Re$. A novel scaling law is uncovered using a...
Scaling of the turbulence transition threshold in a pipe (2003)
We report the results of an experimental investigation of the transition to turbulence in a pipe over approximately an order of magnitude range in the Reynolds number Re. A novel scaling law is...
Magnetohydrodynamic damping of convective flows in molten gallium (2003)
We report the results of an experimental study of magnetohydrodynamic damping of sidewall convection in a rectangular enclosure filled with gallium. In particular we investigate the suppression of...
Scaling of the threshold of pipe flow turbulence (2003)
We report the results of an experimental investigation of the transition to turbulence in a pipe over approximately an order of magnitude range in the Reynolds number Re. A novel scaling law is...
Three-dimensional free convection in molten gallium (2001)
Juel, A., Mullin, T., Ben Hadid, H., Henry, D.
Convective flow of molten gallium is studied in a small-aspect-ratio rectangular, differentially heated enclosure. The three-dimensional nature of the steady flow is clearly demonstrated by...
Three-dimensional free convection in molten gallium (2001)
Juel, A., Mullin, T., Ben Hadid, H., Henry, Daniel
Convective flow of molten gallium is studied in a small-aspect-ratio rectangular, differentially heated enclosure. The three-dimensional nature of the steady flow is clearly demonstrated by...
Three-dimensional free convection in molten gallium (2001)
Juel, A., Mullin, T., Ben Hadid, H., Henry, Daniel
Convective flow of molten gallium is studied in a small-aspect-ratio rectangular, differentially heated enclosure. The three-dimensional nature of the steady flow is clearly demonstrated by...
The `Indian rope trick' via parametric excitation (2001)
Mullin, T, Champneys, AR, Fraser, WB, Galán, J, Acheson, DJ
A seemingly paradoxical experiment is described whereby a length of wire is stabilised upside down by vertical periodic oscillation of its support. The quantitative details of the experiment reveal...
Statistical Theory for the Coupling Sensitivity of Chaos (2000)
Volker Ahlers, Rüdiger Zillmer, Arkady Pikovsky, D. S. Broomhead, E. A. Luchinskaya, ...
. The effect of coupling sensitivity of chaos is known as logarithmic singular behavior of the Lyapunov exponents of coupled chaotic systems at small values of the coupling parameter. In order to...
Magnetohydrodynamic convection in molten gallium (1999)
Juel, A., Mullin, T., Ben Hadid, H., Henry, Daniel
We present the results of an experimental and numerical study of the effects of a steady magnetic field on sidewall convection in molten gallium. The magnetic field is applied in a direction which is...
Magnetohydrodynamic convection in molten gallium (1999)
Juel, A., Mullin, T., Ben Hadid, H., Henry, D.
We present the results of an experimental and numerical study of the effects of a steady magnetic field on sidewall convection in molten gallium. The magnetic field is applied in a direction which is...
Magnetohydrodynamic convection in molten gallium (1999)
Juel, A., Mullin, T., Ben Hadid, H., Henry, Daniel
We present the results of an experimental and numerical study of the effects of a steady magnetic field on sidewall convection in molten gallium. The magnetic field is applied in a direction which is...
The Freedericksz transition as a bifurcation problem (1998)
G. I. Blake, T. Mullin, S. J. Tavener
Abstract. We consider the eþ ects of the application of electric and magnetic ® elds to a homogeneously aligned nematic liquid crystal which lies between parallel plates. The average alignment of...
Free convection in liquid gallium (1997)
Braunsfurth, M.G., Skeldon, A.C., Juel, A., Mullin, T., Riley, D.S.
Free convection in liquid metals is of significant practical interest to the crystal-growing community since the adverse effects of convective instabilities in the melt phase can be frozen into the...
The effect of noise on pitchfork and Hopf bifurcations (1997)
Juel, A., Darbyshire, A.G., Mullin, T.
We present the results of an experimental and numerical investigation into the effects of noise on pitchfork and Hopf bifurcations. Good quantitative agreement is found between calculations and...
Finite-Dimensional Dynamics in Taylor-Couette Flow (1991)
A review is presented of recent work on the effects of finite cylinder length in Taylor-Couette flow. The central aim is to focus attention on features of this classical problem which have proved to...