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The shear viscosity of supercritical oxygen at high pressure

机译:超临界氧气在高压下的剪切粘度

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Shear viscosities of supercritical oxygen have been measured up to a pressure of 5.7 GPa at 294 K.A modified free-volume expression fits the data within 6% between the limits of the tenuous gas and 4.8 times the critical density.Nitrogen viscosities were found to correspond to those of oxygen through a simple scaling by critical constants.Viscosities were measured in the high-pressure diamond-anvil cell with a rolling-ball technique.The dynamics of a sphere rolling on an inclined plane were investigated in the context of these experiments.The effect of a second surface,situated above the sphere,was experimentally determined.
机译:在294 KA下测量的超临界氧气的剪切粘度高达5.7 GPa,修改后的自由体积表达式拟合的数据介于微弱气体极限和临界密度4.8倍之间的6%之内,发现氮粘度与通过临界常数简单标定氧气的氧含量。使用滚球技术在高压金刚石-砧池中测量粘度。在这些实验的背景下,研究了在倾斜平面上滚动的球体的动力学。实验确定了位于球体上方的第二个表面的效果。

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