#### Filter Results:

- Full text PDF available (11)

#### Publication Year

2000

2014

- This year (0)
- Last 5 years (1)
- Last 10 years (8)

#### Publication Type

#### Co-author

#### Journals and Conferences

Learn More

Turbulent convection occurs when the Rayleigh number (Ra)â€”which quantifies the relative magnitude of thermal driving to dissipative forces in the fluid motionâ€”becomes sufficiently high. Although manyâ€¦ (More)

A large-scale circulation velocity, often called the â€˜windâ€™, has been observed in turbulent convection in the Rayleighâ€“BÃ©nard apparatus, which is a closed box with a heated bottom wall. The windâ€¦ (More)

As part of a long-range study of vortex rings, their dynamics, interactions with boundaries and with each other, we present the results of experiments on thin core rings generated by a piston gun inâ€¦ (More)

www.physicstoday.org Many experiments seem daunting at first glance, owing to the sheer number of physical variables they involve. To design an apparatus that circulates fluid, for instance, one mustâ€¦ (More)

Â© 2009 American Institute of Physics, S-0031-9228-0910-020-0 Early research with liquid helium showed that it had remarkable new properties, especially below the so-called lambda transition near 2.2â€¦ (More)

- Ladislav Skrbek, Joseph J Niemela, Katepalli R. Sreenivasan, Russell J. Donnelly
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2002

We measure temperature fluctuations in the Rayleigh-BÃ©nard apparatus, which is a closed cylindrical container with the bottom wall heated and the top wall cooled. The aspect ratio, which is theâ€¦ (More)

- Robert E. Hershberger, Diogo Bolster, Russell J. Donnelly
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2010

We study experimentally the slowing of viscous vortex rings. In particular we do so using the concept of drag coefficient, which is a bulk coefficient which aims to capture the various mechanisms ofâ€¦ (More)

T of the greatest physics discoveries in the first half of the 20th century were superconductivity and superfluidity. Superconductivity involves the frictionless conduction of electricity in wires,â€¦ (More)

- Carl-Heinz Krutzsch, Diogo Bolster, Robert E. Hershberger, Russell J. Donnelly
- 2011

Many people working in the field of vortex ring dynamics will have heard of the paper on vortex rings 12 published by Carl-Heinz Krutzsch in 1939 in Annalen der Physik. However, few will have read itâ€¦ (More)

- Diogo Bolster, Robert E. Hershberger, Russell J. Donnelly
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2010

We have studied oscillation of a pendulum in water using spherical bobs. By measuring the loss in potential energy, we estimate the drag coefficient on the sphere and compare to data fromâ€¦ (More)