Surface tension and viscosity from damped free oscillations of viscous droplets

Suryanarayana, P. V. R.; Bayazıtoğlu, Yıldız

doi:10.1007/bf00506127

Cited by 35 publications

(19 citation statements)

References 8 publications

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“…An analysis of the removal of the degeneracy by a static shape deformation is also available in the literature (Suryanarayana & Bayazitoglu 1991). In previously reported experimental results on drops levitated in air (Trinh et al 1996), three separate l = 2 modes were also observed, and a non-axisymmetric mode was found to have the lowest frequency.…”

Section: Resultsmentioning

confidence: 89%

Driven and freely decaying nonlinear shape oscillations of drops and bubbles immersed in a liquid: experimental results

1998

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Large-amplitude oscillations of drops and bubbles immersed in an immiscible liquid host have been investigated using ultrasonic radiation pressure techniques. Single levitated or trapped drops and bubbles with effective radius between 0.2 and 0.8 cm have been driven into resonant shape oscillations of the first few orders. The direct coupling of driven drop shape oscillations between the axisymmetric l = 6 and l = 3 modes has been documented as well as the interaction between axisymmetric and non-axisymmetric l = 3 and l = 2 modes. Effective resonant energy transfer from higher-to lower-order modes has been observed together with a much less efficient energy transfer in the reverse direction. The first three resonant modes for bubbles trapped in water have also been excited, and mode coupling during driven and freedecaying oscillations has been measured. The evidence gathered thus far indicates that efficient drop resonant coupling between a higher-and a lower-order mode occurs when the characteristic frequency of the latter mode roughly coincides with a harmonic resonance.

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Section: Resultsmentioning

confidence: 89%

Driven and freely decaying nonlinear shape oscillations of drops and bubbles immersed in a liquid: experimental results

1998

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“…In addition, it also assumes that the magnetic field inside the levitation coil has a linear gradient and that the drop has no viscosity. Corrections for the frequency shift due to viscous effects have been calculated [166], and they are negligibly small for liquid metals. Whether or not the field geometry of the levitation coil meets the assumptions of Cummings' theory can be checked by taking the ratio between the frequency O tr,?…”

Section: Oscillating Dropmentioning

confidence: 99%

Structure and Properties of Molten Metals

Egry¹

2014

Treatise on Process Metallurgy

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“…as given by Suryanarayana and Bayazitoglu [22], was calculated. For α 2 > 59, the deviation from the resonant frequency from Rayleigh's analysis is less than 1 % [23].…”

Section: Surface Tension and Viscositymentioning

confidence: 99%

Thermophysical Property Measurements of Liquid Gadolinium by Containerless Methods

et al. 2010

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Thermophysical properties of liquid gadolinium were measured using non-contact diagnostic techniques with an electrostatic levitator. Over the 1585 K to 1920 K temperature range, the density can be expressed aswhere T m = 1585 K, yielding a volume expansion coefficient of 6.2 × 10 −5 K −1 . In addition, the surface tension data can be fitted as γ (T ) = 8.22 × 10 2 − 0.097(T − T m )(10 −3 N · m −1 ) over the 1613 K to 1803 K span and the viscosity as η(T ) = 1.7exp[1.4 × 10 4 /(RT )](10 −3 Pa · s) over the same temperature range.

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Surface tension and viscosity from damped free oscillations of viscous droplets

Cited by 35 publications

References 8 publications

Driven and freely decaying nonlinear shape oscillations of drops and bubbles immersed in a liquid: experimental results

Driven and freely decaying nonlinear shape oscillations of drops and bubbles immersed in a liquid: experimental results

Structure and Properties of Molten Metals

Thermophysical Property Measurements of Liquid Gadolinium by Containerless Methods

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