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Zhu Zhiqiang Chen Shuling Liu Qiusheng Tong Shaoli. Experimental investigation and simulation on the marangoni convection in a binary mixture[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(4): 674-679. DOI: 10.6052/0459-1879-2011-4-lxxb2010-490
Citation: Zhu Zhiqiang Chen Shuling Liu Qiusheng Tong Shaoli. Experimental investigation and simulation on the marangoni convection in a binary mixture[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(4): 674-679. DOI: 10.6052/0459-1879-2011-4-lxxb2010-490

Experimental investigation and simulation on the marangoni convection in a binary mixture

  • Received Date: August 01, 2010
  • Revised Date: November 17, 2010
  • A typical binary aqueous solution with positive surface tension-temperature gradientwas experimentally and numerically studied. In this present paper, the surface tension of a1-pentanol aqueous solution was found to grow with the increase of the temperature under specificconcentration and temperature range. To verify this special phenomenon, flow fields of the1-pentanol aqueous solution under different horizontal temperature gradients were visualized andmeasured in a rectangular cavity by means of PIV method. And an inverse Marangoni convectiondifferent from that in pure liquid layer was investigated. For comparison, a numerical simulationwas carried out to obtain the velocity distribution along the free surface of the 1-pentanol aqueoussolution layer under same horizontal temperature gradients. Both results obtained by theexperimental observation and numerical simulation were found to display similar tendency.
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