Measurement of mass diffusion coefficient by the Soret forced Rayleigh scattering method (2nd report, theoretical analysis of systematic effect of experimental parameters)

Yasuyuki Yamamoto, Yuji Nagasaka

Research output: Contribution to journalArticle

5 Citations (Scopus)


The Soret forced Rayleigh scattering method (S-FRSM) for measurement of mass diffusion coefficient has been developed. In the present paper, the theoretical analysis of the systematic effects of the experimental setup is discussed. It includes the analysis of : (1) effect of dye, (2) effect of sample thickness, (3) effect of Gaussian beam intensity distribution and (4) effect of heating duration time. The analysis of three-dimensional diffusion equation which takes into account the practical experimental conditions has clarified the influence quantity of the inadequate experimental settings. According to the present analysis, it has been found that the difference of diffusion coefficient can be negligible by employing the appropriate setting of experimental parameters. As a result of these considerations, the reliable optimization method of the measuring conditions in SFRSM can be provided.

Original languageEnglish
Pages (from-to)715-722
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number3
Publication statusPublished - 2006 Mar
Externally publishedYes



  • Diffusion
  • Measurement
  • Soret Effect
  • Soret Forced Rayleigh Scattering Method
  • Systematic Effect
  • Theoretical Analysis
  • Thermophysical Property

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this