Measurement of thermophoretic parameters for binary gas mixtures

Razali, Mohd Azahari and Mori, Masayuki and Suzuki, Masataro and Masuda, Wataru (2013) Measurement of thermophoretic parameters for binary gas mixtures. Journal of Aerosol Science, 63. pp. 60-68.

[img] Text
Restricted to Registered users only

Download (511kB) | Request a copy


The thermophoretic velocity of a particle in a gas mixture is measured by means of a microgravity experiment. Adopted particles are PMMA spheres of 2.91 mm in mean diameter, and gas mixtures chosen are argon–nitrogen, argon–carbon dioxide, and nitrogen–carbon dioxide. The temperature gradient and the pressure are 60 K/mm and 70 kPa, respectively. Terminal velocities of particles suspended in a gas are individually measured. The tangential momentum accommodation coefficient is estimated from experimental result by assuming the thermal accommodation coefficient at unity, and it is compared with predictions calculated from values of composing pure gases by means of some methods given in references; among those methods, the intermolecular-interaction�based method is found to be the best for all mixture conditions.

Item Type: Article
Uncontrolled Keywords: Thermophoretic velocity; tangential momentum accommodation; coefficient; energy-balance-based method; mass-fraction-based method; intermolecular-interaction-based method.
Subjects: T Technology > T Technology (General)
Depositing User: Mr. Abdul Rahim Mat Radzuan
Date Deposited: 06 Dec 2022 02:58
Last Modified: 06 Dec 2022 02:58

Actions (login required)

View Item View Item