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首页> 外文期刊>The Canadian Journal of Chemical Engineering >EXPERIMENTAL EVIDENCE OF LOW RAYLEIGH VIBRATION ON MIXTURE DURING THERMODIFFUSION EXPERIMENT
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EXPERIMENTAL EVIDENCE OF LOW RAYLEIGH VIBRATION ON MIXTURE DURING THERMODIFFUSION EXPERIMENT

机译：热变形实验中低瑞氏振动对混合物的实验证据

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摘要

This paper demonstrates the influence of low Rayleigh vibration on thermodiffusion measurement in micrograviry environment. The goal is to show how the variation of certain parameters such as frequency and amplitude of translational vibrations would impact the results obtained from the ISS experiment. Precisely, impact of change in low Rayleigh vibration on the separation of a component is studied for each experimental run. ISS experimental data are obtained based on optical digital interferometry in a reduced gravity environment. The experiment is done in a cubic cell containing an aqueous solution exposed to a lateral temperature gradient. A mixture of water and isopropanol of different initial concentrations with positive and negative Soret coefficient is chosen as the test fluid. Collected data are analysed by image processing. Results show maximum separation of components for the case without any forced vibration. Moreover, an increase in Rayleigh number corresponds to decrease in the separation of components.
机译：本文演示了低瑞利振动对微重力环境中热扩散测量的影响。目的是说明某些参数的变化（例如平移振动的频率和幅度）将如何影响从ISS实验获得的结果。精确地，针对每个实验运行，研究了低瑞利振动变化对组分分离的影响。基于光学数字干涉仪在重力降低的环境中获得ISS实验数据。该实验是在包含暴露于横向温度梯度的水溶液的立方电池中完成的。选择不同初始浓度的水和异丙醇的Soret系数为正和负的混合物作为测试流体。通过图像处理分析收集的数据。结果表明，在没有任何强制振动的情况下，组件的最大分离度。此外，瑞利数的增加对应于组分分离的减少。

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