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  • 1
    Electronic Resource
    Electronic Resource
    Flow state multiplicity in convection (1999)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 11 (1999), S. 2815-2817 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Pattern formation in a layer of fluid heated from below is an example of macroscopic ordering in continuous media. Here we show that in a relatively compact experimental version of the problem, a rich and diverse set of stable flows can be found. These flows, many of which are novel, can be categorized and understood in terms of their symmetry properties. This approach shows promise for providing insight into the more complicated fluid motion that occurs as the lateral dimension of the layer is increased. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870178
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  • 2
    Electronic Resource
    Electronic Resource
    Exact calculation of convection thresholds in rotating binary liquid mixtures (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 664-670 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The exact sine series method of Stein [Phys. Rev. A 43, 768 (1991)] has been extended to allow the calculation of critical Rayleigh numbers and wave numbers for both stationary and oscillatory convection states of rotating binary mixtures in Rayleigh–Bénard geometry. Checks on the accuracy of the method against previous calculations yield good agreement, provided these are multimode. Single-mode methods seriously underestimate Rc when the convection state is rotation-induced oscillatory. The method is used to obtain a hydrodynamic phase diagram showing a codimension-three point for a hypothetical mixture with Prandtl number 0.2 and Lewis number 0.0266. Threshold state calculations for a realistic 3He–4He mixture show that observation of a codimension-three point is impractical through the Prandtl number being too high.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.858284
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  • 3
    Electronic Resource
    Electronic Resource
    Cubic spline fits to thermodynamic and transport parameters of liquid 4He above the λ transition (1981)
    Springer
    Journal of low temperature physics 44 (1981), S. 491-504 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: A survey has been made of the more recent experimental measurements of the viscosity, density, thermal expansion coefficient, thermal conductivity, and specific heat of liquid 4He from the λ region up to 4.2 K. Cubic spline fits to these data are provided using a mean squares approach. The fits are used to plot the temperature dependence of the kinematic viscosity, the thermal diffusivity, and the Prandtl number.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117840
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  • 4
    Electronic Resource
    Electronic Resource
    Visualisation of Convective Flow Patterns in Liquid Helium (1999)
    Springer
    Journal of low temperature physics 114 (1999), S. 109-134 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The advantages of using liquid helium as the investigative fluid in Rayleigh-Bénard experiments are reviewed. A low temperature shadowgraphy apparatus is described that permits convective flow pattern visualisation in liquid helium, thus overcoming the main disadvantage until now of using quantum fluids. The factors involved in maximising the optical resolution for both the shadowgraph and schlieren methods are examined for several fluids and this discussion is applied to the low temperature apparatus in assessing its performance. Some preliminary results on pattern formation in liquid helium are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021849819891
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