Soret and Dufour effects on convective instabilities in binary nanofluids for absorption application

Jake Kim, Yong Tae Kang, Chang Kyun Choi

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Thermodiffusion (Soret effect) and diffusionthermo (Dufour effect) effects on convective instabilities in nanofluids have been theoretically investigated. Thermodiffusion implies that mass diffusion is induced by thermal gradient, which is so-called the Soret effect. Diffusionthermo implies that heat transfer is induced by concentration gradient, which is so-called the Dufour effect. By using the linear stability theory under one-fluid model, a characteristic dimensionless parameter was newly obtained. From the instability analysis with given conditions, it is found that the convective motion in nanofluids sets in easily as the Soret and Dufour effects and the initial concentration of nanoparticles increase.

Original languageEnglish
Pages (from-to)323-328
Number of pages6
JournalInternational Journal of Refrigeration
Volume30
Issue number2
DOIs
Publication statusPublished - 2007 Mar

Keywords

  • Absorption system
  • Colloidal suspension
  • Diffusion
  • Heat transfer
  • Nanofluid
  • Particle
  • Refrigeration
  • Thermal conductivity

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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