Analysis of the Conditions for Determining the Thermal Diffusivity of Organic Liquids by the Laser Pulse Method

G. V. Kuznetsov, M. D. Katz

Research output: Contribution to journalArticle

Abstract

The conditions for conducting experiments to determine the thermal diffusivity of organic liquids by the laser pulse method are analyzed. Under the surface action of a thermal pulse of high power and short duration, the problem of a nonstationary temperature field of a three-layer sample is solved numerically. We establish limits on the range of possible changes in the flux density of the laser beam, which correspond to the conditions for the reliable calculation of the thermal diffusivity of a typical organic liquid, ethanol. The influence of the thickness of the liquid layer on the error of finding the thermal diffusivity is shown.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalMeasurement Techniques
DOIs
Publication statusAccepted/In press - 18 Aug 2017

Fingerprint

Thermal Diffusivity
organic liquids
Thermal diffusivity
thermal diffusivity
Laser pulses
Liquid
Laser
Liquids
pulses
lasers
Ethanol
Temperature Field
Laser Beam
High Power
Laser beams
Temperature distribution
temperature distribution
ethyl alcohol
flux density
laser beams

Keywords

  • ethanol
  • laser pulse method
  • numerical modeling
  • thermal diffusivity

ASJC Scopus subject areas

  • Instrumentation
  • Applied Mathematics

Cite this

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AB - The conditions for conducting experiments to determine the thermal diffusivity of organic liquids by the laser pulse method are analyzed. Under the surface action of a thermal pulse of high power and short duration, the problem of a nonstationary temperature field of a three-layer sample is solved numerically. We establish limits on the range of possible changes in the flux density of the laser beam, which correspond to the conditions for the reliable calculation of the thermal diffusivity of a typical organic liquid, ethanol. The influence of the thickness of the liquid layer on the error of finding the thermal diffusivity is shown.

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