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IIIII湖南涉外经济学院本科生毕业论文（设计）ABSTRACTThearticleintroducesthestructuretheoryofHighEfficiencyHeatandPlate-finHeatExchangebyelaboratingthetypesandstructuresoftheInt.Simultaneously,itestimatesthetemperatureofDon9ChaochaiY4100ZLQturboengineaftpressurization,airmassflowrateandpressureratioandcalculatestheinletflowandinlettemperaturethroughthepressurizedairintheInter.Then,accordingtotheairflowgeneratedbythefan,theenvironmenttemperatureandtheoutlettemperatureoftheInt,itcalculatesthedissipatingheatoftheIntandthendeterminestheheattransfercoefficientoftheInterThethirdistocheckthelossofthehydraulicpressure,boostedtemperatureandtheareaofheatdissipation.Thefourthpartistodrawthemapofthedesignedpartsofthebysoftware,usingthefrontprocessorGambitofFluent,oneoftheCFDcommercialsoftware,meshestheIntanddefinestheboundaryconditions,andthensetstheboundaryconditionsbyinputintotheFluentsoftware,simulationcalculationandresultanalysis.Finally,itdeterminestheoptimizationdirectionandmeasuresoftheInter.Keywords:CFDtechnology;Dieselengine;Coolernumericalsimulation;design1湖南涉外经济学院本科生毕业论文（设计）目录诚信声明……………………………………...………….............………………………....Ⅰ摘要…………………………………….....................................................................ⅡAbstract…………………………………………………………….................……..………Ⅲ第一章前言……................................................................................................................2第二章柴油机中冷器简介............................................................................................32.1柴油机中冷器的类型和结构............................................................................................42.2柴油机中冷器的类型........................................................................................................52.3柴油机中冷器的结构........................................................................................................6第三章中冷器的计算........................................................................................................73.1中冷器结构参数及使用工况.............................................................................................83.2中冷器参数计算................................................................................................................93.2.1中冷胎冷侧散热面积F的计算............................................................................103.2.2发动机要求的热侧空气流....................................................................................113.2.3中冷器的迎风面积................................................................................................12...
