Methods of computational fluid dynamics and design of experiments are implemented in modeling the heat transfer of an Al₂O₃/water-ethylene glycol (EG) nanofluid as a coolant in a car radiator system. The main purpose of the study is to propose a model to predict the Nusselt number using the design of computer experiment. The response surface methodology is applied to investigate the effects of the flow rate, the nanoparticle concentration, the water/EG ratio, and the inlet temperature on Nu. Analysis of variance is performed to obtain a suitable correlation that could predict Nu, leading to the elimination of insignificant terms in the initial proposed quadric model and the attainment of a reduced model. Moreover, the reduced model is converted to a simpler linear model using Box-Cox transformation, which predicts Nu with an accuracy of ±20 %.

中文翻译：

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使用计算流体动力学和响应面方法研究纳米流体传热

在模拟作为汽车散热器系统中冷却剂的 Al ₂ O ₃ /水-乙二醇 (EG) 纳米流体的传热过程中实施了计算流体动力学方法和实验设计。本研究的主要目的是提出一种利用计算机实验设计来预测努塞尔数的模型。响应面方法用于研究流速、纳米颗粒浓度、水/EG 比和入口温度对Nu 的影响。执行方差分析以获得可以预测Nu的合适的相关性，从而消除了最初提出的二次模型中不重要的项并实现了简化模型。此外，使用 Box-Cox 变换将简化模型转换为更简单的线性模型，预测Nu的准确度为 ±20%。