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<p>For disclose the effect of nanoparticle shape on flow regime and critical condition of thermocapillary convection, the nanofluid thermocapillary convection with different shaped nanoparticles are investigated in this paper, and the oscillation characteristics of thermocapillary flow are analyzed. The results indicate that, the nanoparticles can significantly alter the oscillatory characteristics of thermocapillary convection instability, and the influence of platelet shaped nanoparticle is the strongest and followed by cylinder, blade, brick, and sphere nanoparticles. The main frequency of oscillatory thermocapillary convection decreases with the increase of sphericity, and the size of hydrothermal wave propagation angle at free surface is as follows: sphere &gt; brick &gt; cylinder &gt; blade &gt; platelet.</p>

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Numerical Investigation of the Influence of Nanoparticle Shape on Nanofluids Thermocapillary Convection Instability

  • 期刊论文

  • 发表日期：

    2025年5月6日

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  • Guoqing Chen,
  • Ge Yin,
  • Yanni Jiang,
  • Xiaoming Zhou,
  • Yuequn Tao

摘要

For disclose the effect of nanoparticle shape on flow regime and critical condition of thermocapillary convection, the nanofluid thermocapillary convection with different shaped nanoparticles are investigated in this paper, and the oscillation characteristics of thermocapillary flow are analyzed. The results indicate that, the nanoparticles can significantly alter the oscillatory characteristics of thermocapillary convection instability, and the influence of platelet shaped nanoparticle is the strongest and followed by cylinder, blade, brick, and sphere nanoparticles. The main frequency of oscillatory thermocapillary convection decreases with the increase of sphericity, and the size of hydrothermal wave propagation angle at free surface is as follows: sphere > brick > cylinder > blade > platelet.