Comptes Rendus
Digital interferometry as a powerful tool to study the thermodiffusion effect
Comptes Rendus. Mécanique, Volume 339 (2011) no. 5, pp. 362-368.

Interferometry is a trusted and widely used optical technique for measurements of the refractivity of objects, from which related quantities like temperature, or concentration can be determined. In particular, it is considered as most precise method for measuring diffusion in transparent fluids. A reason why this precise and powerful technique has not yet found application for measuring thermodiffusion obviously lies not in the accuracy of the method itself but rather in a set of some complementary factors. Consideration of the main factors affecting accuracy of thermodiffusion measurement by interferometry is one of topics of present work.

For the measurements of thermodiffusion by means of optical diagnostics, we use a classical Soret cell with transparent lateral walls clamped between two thermostabilized blocks. Although this system is generally stable with downward temperature gradient, some small lateral heat flux provokes residual convection which in turn disturbs the measurement. Ability of the method to locate and exclude from consideration the regions disturbed by convection is demonstrated for cells of different geometries. Cell design optimized with help of digital interferometry has been successfully used to measure Soret and diffusion coefficients in different binary mixtures.

Published online:
DOI: 10.1016/j.crme.2011.04.001
Keywords: Digital interferometry, Diffusion, Thermal diffusion, Soret cell, Soret effect

Alexander Mialdun 1; Valentina Shevtsova 1

1 Microgravity Research Center, Université Libre de Bruxelles, CP165/62, av. F. Roosevelt, 50, B-1050 Bruxelles, Belgium
@article{CRMECA_2011__339_5_362_0,
     author = {Alexander Mialdun and Valentina Shevtsova},
     title = {Digital interferometry as a powerful tool to study the thermodiffusion effect},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {362--368},
     publisher = {Elsevier},
     volume = {339},
     number = {5},
     year = {2011},
     doi = {10.1016/j.crme.2011.04.001},
     language = {en},
}
TY  - JOUR
AU  - Alexander Mialdun
AU  - Valentina Shevtsova
TI  - Digital interferometry as a powerful tool to study the thermodiffusion effect
JO  - Comptes Rendus. Mécanique
PY  - 2011
SP  - 362
EP  - 368
VL  - 339
IS  - 5
PB  - Elsevier
DO  - 10.1016/j.crme.2011.04.001
LA  - en
ID  - CRMECA_2011__339_5_362_0
ER  - 
%0 Journal Article
%A Alexander Mialdun
%A Valentina Shevtsova
%T Digital interferometry as a powerful tool to study the thermodiffusion effect
%J Comptes Rendus. Mécanique
%D 2011
%P 362-368
%V 339
%N 5
%I Elsevier
%R 10.1016/j.crme.2011.04.001
%G en
%F CRMECA_2011__339_5_362_0
Alexander Mialdun; Valentina Shevtsova. Digital interferometry as a powerful tool to study the thermodiffusion effect. Comptes Rendus. Mécanique, Volume 339 (2011) no. 5, pp. 362-368. doi : 10.1016/j.crme.2011.04.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2011.04.001/

[1] Springer Handbook of Experimental Fluid Mechanics (C. Tropea; A. Yarin; J. Foss, eds.), Springer-Verlag, Berlin, Heidelberg, 2007

[2] L.G. Longsworth The temperature dependence of the Soret coefficient of aqueous potassium chloride, J. Phys. Chem., Volume 61 (1957), pp. 1557-1562

[3] J.K. Platten; M.M. Bou-Ali; P. Costeseque et al. Benchmark values for the Soret, thermal diffusion and diffusion coefficients of three binary organic liquid mixtures, Philos. Mag., Volume 83 (2003), pp. 1965-1971

[4] M. Takeda; H. Ina; K. Kobayashi Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry, J. Opt. Soc. Amer., Volume 72 (1982), pp. 156-160

[5] W.W. Macy Two-dimensional fringe-pattern analysis, Appl. Opt., Volume 22 (1983), pp. 3898-3901

[6] K. Creath Phase-measurement interferometry techniques (E. Wolf, ed.), Progress in Optics, vol. XXVI, Elsevier Science Publishers, 1988

[7] D. Malacara; M. Servin; Z. Malacara Interferogram Analysis for Optical Testing, Taylor & Francis, 2005

[8] M. Hipp; J. Woisetschläger; P. Reiterer; T. Neger Digital evaluation of interferograms, Measurement, Volume 36 (2004), pp. 53-66

[9] A. Mialdun; V. Shevtsova Development of optical digital interferometry technique for measurement of thermodiffusion coefficients, Int. J. Heat Mass Transfer, Volume 51 (2008), pp. 3164-3178

[10] A. Mialdun; V. Shevtsova Open questions on reliable measurements of Soret coefficients, Micrograv. Sci. Technol., Volume 21 (2009), pp. 31-36

[11] A. Mialdun; V. Shevtsova Measurement of the Soret and diffusion coefficients for benchmark binary mixtures by means of digital interferometry, J. Chem. Phys., Volume 134 (2011), p. 044524

[12] A. Königer; B. Meier; W. Köhler Measurement of the Soret, diffusion, and thermal diffusion coefficients of three binary organic benchmark mixtures and of ethanol–water mixtures using a beam deflection technique, Philos. Mag., Volume 89 (2009), pp. 907-923

Cited by Sources:

Comments - Policy