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建立了某D6114柴油机固件(机体、缸盖和缸套)和冷却系统的耦合模型,应用直接流/热耦合的方法对耦合莫型进行流动和传热的仿真分析,冷却水和冷却壁面间的热量交换由耦合计算自动完成,预测了该机冷却水套的流速分布和耦合体的温度场。数值模拟结果表明:机体水套的流场基本满足要求,而缸盖水腔各缸的流速分布存在明显差异,其中第一缸的局部区域流体速度最低(局部小于0.5m/s);受热部件的温度变化较大,差异明显,无论是缸盖、机体还是缸套,最大温度均出现在第一缸。
A coupled model of a D6114 diesel engine’s firmware (body, cylinder head and cylinder liner) and cooling system was established. The simulation of the flow and heat transfer of the coupled mover was carried out by using the direct flow / thermal coupling method. The relationship between the cooling water and the cooling wall The heat exchange is completed automatically by the coupling calculation, and the flow velocity distribution and the temperature field of the coupling body are predicted. Numerical simulation results show that the flow field of the water jacket meets the requirements basically. However, the velocity distribution of each cylinder in the cylinder head water chamber is obviously different. The fluid velocity in the first cylinder is the lowest (less than 0.5 m / s) Of the larger temperature changes, the difference is obvious, whether it is cylinder head, body or cylinder liner, the maximum temperature are in the first cylinder.