纳米流体中纳米颗粒以团聚体的形式存在.为预测纳米流体的导热系数,模拟了流体中纳米颗粒团聚体的三维空间结构并用热阻网络法计算了团聚体的导热系数.在得到团聚体的导热系数与考虑液体分子吸附层后团聚体的体积分数后,预测纳米流体的导热系数.用实验数据验证了该预测方法并运用该方法预测了铜-R22纳米制冷剂的导热系数.
参考文献
[1] | Choi U S .Enhancing Thermal Conductivity of Fluids with Nanoparticles[J].ASME Fluids Engineering Division,1995,231:99-105. |
[2] | Wang K J;Ding G L;Jiang W T.Development of Nanorefrigerant and its Rudiment Property[A].四川成都,2005:1-6. |
[3] | Bu-Xuan Wang;Le-Ping Zhou;Xiao-Feng Peng .A fractal model for predicting the effective thermal conductivity of liquid with suspension of nanoparticles[J].International Journal of Heat and Mass Transfer,2003(14):2665-2672. |
[4] | Xuan YM.;Li Q.;Hu WF. .Aggregation structure and thermal conductivity of nanofluids[J].AIChE Journal,2003(4):1038-1043. |
[5] | P. Keblinski;S. R. Phillpot;S. U. S. Choi;J. A. Eastman .Mechanisms of heat flow in suspensions of nano-sized particles (nanofluids)[J].International Journal of Heat and Mass Transfer,2002(4):855-863. |
[6] | Witten T A;Sander L M .Diffusion-Limited Aggregation,a Kinetic Critial Phenomenon[J].Physical Review Letters,1981,47:1400-1403. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%