In the present numerical study, the mixed convection of Cu-water and CuO-water nanofluids is modeled inside an inclined square-shaped cavity by utilizing the thermal model of the Lattice Boltzmann Method (LBM). A cold fluid flow enters into the cavity at the upper side of the left wall and, after being heated by the hot obstacle, exits from the lowest right side of the cavity The effective thermal conductivity and viscosity of nanofluids are computed by the KKL (Koo-Kleinstreuer-Li) equation. The results are presented in the constant Rayleigh number of 104 and the Richardson numbers of 0.1,1 and 10. Obtained results reveal that by incrementing Ri because of the augmentation of inlet fluid velocity from the left side, the gradient of isothermal lines decreases, and temperature distribution becomes more uniform, leading to Nusselt number reduction on hot wall. Although the Nu_avg enhances considerably in Ri of 0.1, in Ri = 1 and 10, there is no sensible change. In the angle of 0o, by augmenting Ri, Nu_avg decreases, but in the angle of 60o, by increasing Ri from 0.1 to 1, Nu_avg increments up to 22%. This augmentation is due to the change of angle of the collision of flow with the hot obstacle. Furthermore, when the hot obstacle is located in the flow path, heat transfer improves. Application of such studies shows its importance in the design of electronic components cooling systems, solar energy storage, heat exchangers, and lubrication systems.

在目前的数值研究中，利用格子玻尔兹曼方法 (LBM) 的热模型，在倾斜的方形腔内模拟了 Cu-水和 CuO-水纳米流体的混合对流。冷流体流进入在左壁的上侧的空腔，并且通过热障碍物被加热之后，从空腔中的有效热导率和纳米流体的粘度的最低右侧退出由KKL（辜计算-Kleinstreuer丽）方程。结果示于104的恒定瑞利数和0.1,1和10得到的结果的数字理查森呈现显示，通过增加入口因为流体速度的从左侧的增强的RI，等温线的斜率减小，并且温度分布变得更加均匀，导致对热壁Nu数减少。尽管怒江_平均提高相当0.1 RI，在RI = 1和10，也没有合理的变化。在0°的角度，通过增加RI，女_平均降低，但在60°的角度，由R增大从0.1至1，女_平均增量到22％。这增强是由于流动与热障碍物碰撞的角度的变化。此外，当热障碍物位于所述流动路径，热传递性提高。这些研究的应用表明它的电子元件冷却系统，太阳能储能，热交换器，和润滑系统的设计的重要性。