为了了解水平温度梯度作用下双层流体内热毛细对流的特征,实验观察了环形池内由1cSt硅油和氟化液FC-40组成的双层流体内热毛细对流失稳后的不稳定现象.实验表明,随着上层或下层流体厚度的增加,流动稳定性减弱.当上层厚度为1.5 mm时,内外环间温差超过临界温差后在外环区域产生三维稳态的直条纹、并在内环区域产生热流体波,波纹产生于上层流体.当上层流体厚度为2mm时,液层内三维稳态直条纹占主导.环形池旋转使稳态条纹变为弯曲波纹,并且液层内只有一组传播方向与环形池的旋转方向相反的热流体波.
参考文献
| [1] | Reduction of grown-in dislocation density in Ge Czochralski-grown from the B_2O_3-partially-covered melt[J].Journal of Crystal Growth,2009(22):4615-4618. |
| [2] | Liu QS.;Velarde MG.;Roux B. .Thermocapillary convection in two-layer systems[J].International Journal of Heat and Mass Transfer,1998(11):1499-1511. |
| [3] | 李友荣,张文杰,王双成.环形双层液体内热毛细对流过程的数值模拟[J].工程热物理学报,2008(10):1759-1761. |
| [4] | You-Rong Li;Shuang-Cheng Wang;Shuang-Ying Wu;Lan Peng .Asymptotic solution of thermocapillary convection in thin annular two-layer system with upper free surface[J].International Journal of Heat and Mass Transfer,2009(21/22):4769-4777. |
| [5] | Zijing Ding;Qiusheng Liu.Linear instability analysis of thermocapillary convection in a bilayer system[J].International Journal of Heat and Mass Transfer,2013:63-72. |
| [6] | Someya S.;Munakata T.;Nishio M.;Okamoto K.;Madarame H. .Flow observation in two immiscible liquid layers subject to a horizontal temperature gradient[J].Journal of Crystal Growth,2002(1/4):626-632. |
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