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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Slip velocity of amorphous fluid inside wavy-rough microtubes tuned by temperature
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Slip velocity of amorphous fluid inside wavy-rough microtubes tuned by temperature

机译:波浪形微管内无定形流体的滑移速度受温度调节

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摘要

Using the boundary perturbation technique together with Eyring's transition-rate-theory model, we can obtain approximately the slip velocity of amorphous fluids inside the wavy-rough microtube. Our calculations show that, once the slip length is set to zero, there is a temperature as well as an activation energy-dependent slip velocity (up to second order) near the wall. This nonzero velocity near the boundary of the microtube is proportional to the small amplitude of wavy-roughness, the curvature of the tube (inner) surface, the applied forcing, the orientation and the referenced shear rate, which is strongly temperature dependent once the activation energy is fixed.
机译:使用边界摄动技术和Eyring的跃迁速率理论模型,我们可以大致获得波状微管内无定形流体的滑移速度。我们的计算表明,一旦滑移长度设置为零,壁附近就会有温度以及与活化能有关的滑移速度(直至二阶)。微管边界附近的非零速度与小幅度的波状粗糙度,管(内)表面的曲率,所施加的力,方向和参考剪切速率成正比,一旦激活,该速率就与温度密切相关能量是固定的。

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