I题目柴油机增压中冷器数值模拟与设计摘要在讲述，中冷器类型、结构中，介绍了高效换热器、板翅式换热器的结构原理对东风朝柴 CY4100ZLQ 增压发动机估算出增压后温度、空气质量流量及增压比，计算出了增压空气在中冷器处的进口流量及进口温度。然后再根据风扇所产生的冷空气流量，环境温度及中冷器出口温度，计算出中冷器需要散失的热量，再去确定中冷器的传热系数，同时对压力损失、增压温度、散热面积进行校核。用软件绘制出设计的中冷器零件图，利用 CFD 商业软件 Fluent 中的前置处理器 Gambit 对该中冷器网格划分、边界条件定义，再导入 Fluent 进行边界条件设定、模拟计算和结果分析，最后确定中冷器优化的方向及优化措施。关键词：CFD 技术；柴油机；冷器数值模拟；设计IIIIIABSTRACTThe article introduces the structure theory of High Efficiency Heat and Plate-fin Heat Exchange by elaborating the types and structures of the Int. Simultaneously, it estimates the temperature of Don9 ChaochaiY4100ZLQ turbo engine aft pressurization, air mass flow rate and pressure ratio and calculates the inlet flow and inlet temperature through the pressurized air in the Inter. Then, according to the air flow generated by the fan, the environment temperature and the outlet temperature of the Int, it calculates the dissipating heat of the Int and then determines the heat transfer coefficient of the Inter The third is to check the loss of the hydraulic pressure, boosted temperature and the area of heat dissipation. The fourth part is to draw the map of the designed parts of the by software, using the front processor Gambit of Fluent, one of the CFD commercial software, meshes the Int and defines the boundary conditions, and then sets the boundary conditions by input into the Fluent software, simulation calculation and result analysis. Finally, it determines the optimization direction and measures of the Inter. Keywords: CFD technology; Diesel ...
