In this study, a colloidal suspension consists of Cu nanoparticles and engine oil has been made by a one- step method known as Electrical Explosion of Wire (E.E.W) in three different weight concentrations of 0.2%, 0.5% and 1%. After studying physical properties of the applied nanofluids via high resolution transmission electron microscopy and measuring zeta potential for the stability analysis, thermo-physical properties such as thermal conductivity and viscosity, have been experimentally studied. Measured data of thermal conductivity and viscosity of applied nanofluids have been compared to the predicted ones through the proposed correlations for thermal conductivity and viscosity of oil based nanofluids and acceptable agreements between the two have been achieved. The range of thermal conductivity of higher weight concentration was measured to be from 0.153 to 0.17 (W/m. K) in the temperature range from 40 C to 100 C, while pure engine oil exhibits a decreasing trend in contradictory. Secondly, viscosity variations through capturing Newtonian or non- Newtonian behavior of utilized nanofluids has been investigated. The viscosity range for higher weight concentration nanofluid was observed from 235 cP to 35 cP in the applied temperature range. Finally, thermal conductivity and viscosity enhancements of 49% and 37% were observed for 1% weight fraction of utilized nanofluids.

在这项研究中，由铜纳米粒子组成的胶体悬浮液和机油已通过一种称为“电线电爆炸”（EEW）的一步法制备，三种浓度分别为0.2％，0.5％和1％。在通过高分辨率透射电子显微镜研究所施加的纳米流体的物理性质并测量zeta电位以进行稳定性分析之后，已对热物理性质（如导热系数和粘度）进行了实验研究。通过对油基纳米流体的导热系数和粘度的拟议相关性，已将所应用的纳米流体的导热系数和粘度的测量数据与预测的数据进行了比较，并且已经获得了两者之间的可接受的协议。在40℃至100℃的温度范围内，较高重量浓度的导热率范围经测量为0.153至0.17（W / m.K），而纯净的机油却呈现出相反的下降趋势。其次，已经研究了通过捕获所利用的纳米流体的牛顿或非牛顿行为来改变粘度。在所施加的温度范围内，观察到较高重量浓度的纳米流体的粘度范围为235 cP至35 cP。最后，对于所用纳米流体的1重量％，观察到热导率和粘度增加了49％和37％。通过捕获所利用的纳米流体的牛顿或非牛顿行为来研究粘度变化。在所施加的温度范围内，观察到较高重量浓度的纳米流体的粘度范围为235 cP至35 cP。最后，对于所用纳米流体的1重量％，观察到热导率和粘度增加了49％和37％。通过捕获所利用的纳米流体的牛顿或非牛顿行为来研究粘度变化。在所施加的温度范围内，观察到较高重量浓度的纳米流体的粘度范围为235 cP至35 cP。最后，对于所使用的纳米流体的1重量％，观察到热导率和粘度增加了49％和37％。