Measurement of the thermal diffusivity of liquids by the forced rayleigh scattering method. 2nd report. Analysis of error factors

Yuji Nagasaka, Takuya Hatakeyama, Akira Nagashima

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In the present paper we describe the theoretical analysis of error factors of the forced Rayleigh scattering method to measure the thermal diffusivity of liquids. The error factors we considered here are ; 1) effect of sample wall, 2) effect of dye, 3) effect of Gaussian beam intensity distribution, 4) effect of heating duration time, all of which hinder the one-dimensional heat conduction assumed in the basic theory. The entire analysis is divided into two parts ; namely weak absorption analysis and strong absorption analysis. This is because the individual error factors cannot be superimposed in the case of a high dye concentration. According to the present study it is concluded that the experimental conditions can be so chosen that the amount of total error is negligible.

Original languageEnglish
Pages (from-to)2545-2553
Number of pages9
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume53
Issue number492
DOIs
Publication statusPublished - 1987 Jan 1
Externally publishedYes

Keywords

  • Forced Rayleigh Scattering Method
  • Thermal Diffusivity Optical Measurement
  • Thermophysical Properties

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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