| 摘要:对某柴油机8缸整体冷却水套进行绝热流动模拟，得到冷却效果最差的一个缸及冷却液的流动边界条件；对该缸进行单缸气缸盖-冷却水套-气缸套流固耦合计算，得到了缸盖和缸套温度分布及水套流动及温度场情况；对该缸加入进、排气进行气-液-固三相流固耦合分析，得到缸盖温度场和水套温度场情况，与不考虑进、排气的情况以及与试验测得的工程数据的比较表明:考虑进、排气时的模拟结果更加接近试验值，说明该方法更符合实际情况。 |
| 关键词: 冷却系统 三相流固耦合 CFD |
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| Analysis of Gas-Fluid-Solid Three Phase Fluid-Solid Coupling Heat Transferof Certain Eight-Cylinder Medium Speed Diesel Engine Cooling System |
| Gao Xiang,Xue Dongxin,Meng Hao,Wang Hongfeng |
| Dalian University of Technology, Liaoning Dalian 116024;Dalian CRRC Diesel Engine Co., Ltd., Liaoning Dalian 116024 |
| Abstract:In accordance with the adiabatic flow simulation of certain eight-cylinder diesel engine cooling water jacket, the cylinder with the worst cooling effect and the flow boundary condition of the cooling liquid were found out. Single cylinder head-cooling water jacket-cylinder liner fluid-solid coupling calculation of this cylinder was carried out, which delivered the results including the temperature distribution of its cylinder head and cylinder liner, water jacket flow and temperature field. Moreover, taking into account gas intake and exhaust of this cylinder, gas-fluid-solid three phase fluid-solid coupling analysis was carried out, which delivered the results including the temperature field of cylinder head and water jacket. The conditions with and without taking gas intake and exhaust into consideration were compared with eachother and finally with the test data, and the results showed that the former condition was closer to the test result, which indicated that the method was closer to the actual situation. |
| Key words: cooling system gas-fluid-solid three phase fluid-solid coupling CFD |
