Model for predicting the critical size of aggregates in nanofluids

Jung Yeul Jung, Junemo Koo, Yong Tae Kang

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Stable suspension of the nanoparticles in the base fluids is inevitable to have the nanofluids be operated properly. Here we report the theoretical model to find the critical size of aggregates in nanofluids for the first time. The concept of relaxation time τr is adopted, which reflects the probability of encountering the particles. The hydrodynamic diameter of the aggregates in nanofluids must be kept below the critical size to be stably suspended, which is in good agreement with the experimental results.

Original languageEnglish
Pages (from-to)1165-1169
Number of pages5
JournalJournal of Mechanical Science and Technology
Issue number4
Publication statusPublished - 2013 Apr
Externally publishedYes


  • Brownian motion
  • Critical size
  • Interparticle interaction
  • Nanofluid

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering


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