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首页> 外文期刊>International Journal of Heat and Mass Transfer >A new method to measure the thermal slip coefficient
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A new method to measure the thermal slip coefficient

机译：一种测量热滑系数的新方法

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The present work deals with the new measurement of the thermal slip coefficient in an original manner, that is by correlating the thermal slip coefficient to a mass flow rate that is engendered by solely applying a known inequality of temperature along a solid surface at contact with the fluid. As far as we are aware, these are the first experimental results of the thermal slip coefficient obtained from a temperature gradient induced mass flow rate (thermal transpiration). The thermal slip coefficients were obtained for argon and nitrogen by submitting a single glass capillary to small temperature differences, that is ΔT = 71, 53.5 and 37 K for the following condition ΔT ＜＜ T_(av). In the frame of Maxwell's diffuse specular kernel an accommodation coefficient is associated to the obtained thermal slip coefficient. The here obtained values of the accommodation coefficient are similar to those which have been previously found from the isothermal mass flow rate measurements.
机译：本工作以原始方式处理热滑移系数的新测量，即通过将热滑移系数与质量流量相关联，该质量流量仅通过沿与热接触的固体表面施加已知的温度不等式而产生。体液。据我们所知，这是从温度梯度引起的质量流量（热蒸发）获得的热滑系数的第一个实验结果。氩气和氮气的热滑系数是通过将单个玻璃毛细管置于较小的温差下而获得的，对于以下条件ΔT＜＜ T_（av），ΔT= 71、53.5和37K。在麦克斯韦扩散镜面核的框架中，调节系数与获得的热滑移系数相关。此处获得的调节系数值类似于先前从等温质量流量测量中发现的值。

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