基于流固耦合的某船用低速柴油机活塞温度场分析

针对某研发新型船用柴油机,建立其活塞固体域和流体域模型,运用有限元软件ABAQUS和流体动力学软件START-CCM+进行联合仿真,得到其活塞耦合面对流换热系数和温度场分布。活塞最高温度538K左右,活塞第一环区及环区附近区域大部分温度439K在左右,活塞环区及活塞内部冷却腔大部分温度处于340K~439K范围以内,最后与现有对标机型进行对比,得到仿真计算所得活塞温度分布与对标机型温度场实测值基本一致,活塞温度场仿真计算结果基本符合实际。

An analysis of marine diesel engine piston temperature field based on fluid-structure coupling

Establish the solid domain and fluid domain of the piston of a new marine diesel engine. The heat transfer coefficient of the piston coupling interface and the temperature distribution of the piston were simulated by ABAQUS and START-CCM . From the result of simulation, we can get that the maximum temperature of the piston is about 260 degrees, the temperature of first piston ring area and surroundings are all most about 160 degrees, the temperature of the piston ring area and inside the cooling chamber are range from 70 degrees to 150 degrees. The simulation of piston temperature distribution is consistent with the standard model temperature field. The results of piston Temperature field simulation are consistent with reality.