Nanofluids are an innovative technology that can be used to improve the efficiency of heat transfer in systems such as coolers. Thermal system design requires access to all the physical properties of the nanofluids among which viscosity, thermal conductivity, and so on. Viscosity is an important flow property of fluids. Literally, viscosity analysis is quite essential for determining the thermofluidic behavior of heat transfer fluids. Therefore, we developed a new micromechanical model using the finite element method to calculate the dynamic viscosity of different types of nanofluids with different volume concentrations. The finite element method (FEM) model, using FreeFem + + software, is compared to an analytical creep function that provides a way to extract the viscosity when constant shear stress on the 2DKelvin-Voigt medium is applied. The model results showed a very good agreement compared to the experimental data from the literature. Also, this model was compared to some viscosity correlations such as Einstein, Brinkman, Batchelor, Corcione, and Rudyak.

纳米流体是一种创新技术，可用于提高冷却器等系统的传热效率。热系统设计需要访问纳米流体的所有物理特性，其中包括粘度、热导率等。粘度是流体的重要流动特性。从字面上看，粘度分析对于确定传热流体的热流体行为非常重要。因此，我们使用有限元方法开发了一种新的微机械模型来计算具有不同体积浓度的不同类型纳米流体的动态粘度。将使用 FreeFem++ 软件的有限元法 (FEM) 模型与分析蠕变函数进行比较，该函数提供了一种在 2DKelvin-Voigt 介质上施加恒定剪切应力时提取粘度的方法。与文献中的实验数据相比，模型结果显示出非常好的一致性。此外，该模型还与一些粘度相关性进行了比较，例如爱因斯坦、布林克曼、巴彻勒、科尔乔内和鲁迪亚克。