Eur. Phys. J. E (2015) 38: 30
https://doi.org/10.1140/epje/i2015-15030-7

Regular Article

Benchmark values for the Soret, thermodiffusion and molecular diffusion coefficients of the ternary mixture tetralin+isobutylbenzene+n-dodecane with 0.8-0.1-0.1 mass fraction

¹ Mechanical and Industrial Manufacturing Department, MGEP Mondragon Goi Eskola Politeknikoa, Loramendi 4 Apdo 23, 20500, Mondragon, Spain
² Dept. of Mechanical and industrial Engineering, Ryerson University, Toronto, Canada
³ MRC, EP CP 165/62, Université libre de Bruxelles (ULB), Brussels, Belgium
⁴ Physikalisches Institut, Universität Bayreuth, D-95440, Bayreuth, Germany
⁵ Institute of Continuous Media Mechanics UB RAS, Perm, Russia
⁶ Institute of Computational Modelling SB RAS, Krasnoyarsk, Russia

^* e-mail: mbouali@mondragon.edu

Received: 15 July 2014
Revised: 6 November 2014
Accepted: 17 February 2015
Published online: 28 April 2015

Abstract

With the aim of providing reliable benchmark values, we have measured the Soret, thermodiffusion and molecular diffusion coefficients for the ternary mixture formed by 1,2,3,4-tetrahydronaphthalene, isobutylbenzene and n-dodecane for a mass fraction of 0.8-0.1-0.1 and at a temperature of 25°C. The experimental techniques used by the six participating laboratories are Optical Digital Interferometry, Taylor Dispersion technique, Open Ended Capillary, Optical Beam Deflection, Thermogravitational technique and Sliding Symmetric Tubes technique in ground conditions and Selectable Optical Diagnostic Instrument (SODI) in microgravity conditions. The measurements obtained in the SODI installation have been analyzed independently by four laboratories. Benchmark values are proposed for the thermodiffusion and Soret coefficients and for the eigenvalues of the diffusion matrix in ground conditions, and for Soret coefficients in microgravity conditions.