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  1. No Access

    Article

    Drag Measurement on an Oscillating Sphere in Helium II

    Here we report measurement of the drag on a 3 mm oscillating sphere in superfluid 4He in the temperature range 1.6 K to 2.1 K. A Nb-Ti superconducting solenoid is used to suspend a niobium sphere; meanwhile a sim...

    A. M. Hemmati, S. Fuzier, E. Bosque, S. W. Van Sciver in Journal of Low Temperature Physics (2009)

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    Article

    Separation of Micron-Scale Particles by Size Using Helium II

    Here we report on a new technique we are develo** to classify micron scale particles, i.e., separate them by size, using superfluid 4He (He II). The technique is based on the unique property of He II, that is i...

    S. Fuzier, N. Kalechofsky, S. W. Van Sciver in Journal of Low Temperature Physics (2008)

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    Article

    Particle Image Velocimetry Studies of Counterflow Heat Transport in Superfluid Helium II

    Heat is transported in helium II by a mechanism known as thermal counterflow where the liquid behaves as if it consists of two fluid components: the viscous normal fluid that carries the entropy and the invis...

    S. W. Van Sciver, S. Fuzier, T. Xu in Journal of Low Temperature Physics (2007)

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    Article

    Direct Measurements of Quantum Turbulence Induced by Second Sound Shock Pulses in Helium II

    Direct measurements in a wide channel of He II at 1.7 K are presented of quantum turbulence induced by second sound shock (SSS) pulses. Such pulses are moving volume sources of power flux density, with the Vin...

    D. K. Hilton, S. W. Van. Sciver in Journal of Low Temperature Physics (2005)

  5. No Access

    Article

    The motion of micron-sized particles in He II counterflow as observed by the PIV technique

    The motion of micro-spheres in He II thermal counterflow has been measured using the Particle Image Velocimetry (PIV) technique. Although the tracer particles are able to track the motion of the normal fluid c...

    T. Zhang, S. W. Van Sciver in Journal of Low Temperature Physics (2005)

  6. No Access

    Article

    Tracer Particles for Application to PIV Studies of Liquid Helium

    Material selection and methods for introduction of tracer particles into liquid helium are reviewed for application in particle image velocimetry experiments. The combination of low temperature environment and...

    T. Zhang, D. Celik, S. W. Van Sciver in Journal of Low Temperature Physics (2004)

  7. No Access

    Article

    Experimental evidence of homogeneous superfluid turbulence in large-pore porous media

    Experimental results are presented for counterflow and isothermal coflow through large-pore porous materials, with porosities greater than 90% and permeabilities of order 10−11 m2. Counterflow velocities ranging ...

    J. R. Maddocks, S. W. Van Sciver in Journal of Low Temperature Physics (1994)

  8. No Access

    Article

    Attenuation of second sound in bulk flowing He II

    New measurements of second sound attenuation in bulk flowing He II are reported which extend to a region of higher Reynolds number. An expression for the attenuation explicitly containing the quantum vortex li...

    D. Scott Holmes, S. W. Van Sciver in Journal of Low Temperature Physics (1992)

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    Article

    Apparent new phase of monolayer3He and4He films adsorbed on Grafoil as determined from heat capacity measurements

    Heat capacity measurements in monolayer3He and4He films adsorbed on Grafoil at densities higher than the one corresponding to the substrate lattice registered phase show a series of sharp, narrow peaks at 1 K for...

    S. V. Hering, S. W. Van Sciver, O. E. Vilches in Journal of Low Temperature Physics (1976)