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将非牛顿流体力学理论及其方法推广应用于建立纳米流体-新概念非牛顿流体扰动本构方程,并研究其传热流动。韩式方发展了有特色的非牛顿流体扰动本构理论,并成功地应用于研究非牛顿流动稳定性,可以应用于非牛顿流动研究。将非牛顿流体扰动本构理论推广至建立新的纳米流体微扰动模型,对单相流体模型进行微扰动修正。纳米流体强化热交换机制:悬浮粒子增加二相混合体的热传导率;极细粒子随机运动,热耗散加速流体中能量转换过程。在新的纳米流体扰动本构方程基础上。研究了纳米流体传热流动,其结果表明,Nusselt数随纳米粒子的体积分数的增加而增加,其趋势与实验结果一致,表明本理论方法是合理的,可以推广于应用一系列纳米流体流动问题。
The non-Newtonian fluid mechanics theory and its method are applied to the establishment of nanofluid - a new concept of non-Newtonian fluid perturbation constitutive equation, and study its heat transfer flow. Korean side has developed a unique non-Newtonian fluid perturbation constitutive theory, and successfully applied to study non-Newtonian flow stability, can be applied to non-Newtonian flow research. The non-Newtonian fluid perturbation constitutive theory is extended to the establishment of a new nanofluidic perturbation model and the perturbation correction of the single-phase fluid model. Nanofluid-enhanced heat exchange mechanism: suspended particles increase the thermal conductivity of the two-phase mixture; very fine particles move randomly, heat dissipation accelerates the energy conversion process in the fluid. Based on the new perturbation constitutive equations of nanofluids. The results show that the Nusselt number increases with the increase of the volume fraction of nano-particles, and the trend is consistent with the experimental results. It shows that the theoretical method is reasonable and can be extended to a series of applications of nano-fluid flow .