汽车实用技术
汽車實用技術
기차실용기술
PRACTICAL TECHNOLOGY OF AUTOMOBILE
2012年
7期
12-16
,共5页
车身造型%风阻系数%Fluent%车身优化
車身造型%風阻繫數%Fluent%車身優化
차신조형%풍조계수%Fluent%차신우화
body styling%wind-resistance coefficient%Fluent%optimization of the body
车身造型直接决定了汽车在行驶过程中受到的空气阻力的大小。将汽车的后视镜和门把手内置能使车身整体更加符合流线型，降低约3％的整车迎风面积，从而减少汽车在行驶过程中受到的空气阻力。本研究运用Pro／Engineer造型功能建立三维模型，在Hypermesh对模型的流场计算域进行网格划分，然后将网格导入Fluent中进行仿真计算。经过对后视镜和门把手内置模型与后视镜和门把手外置模型的比较分析，得出后视镜和门把手内置能有效的降低汽车的风阻系数，减少汽车在行驶过程中受到的空气阻力。
車身造型直接決定瞭汽車在行駛過程中受到的空氣阻力的大小。將汽車的後視鏡和門把手內置能使車身整體更加符閤流線型，降低約3％的整車迎風麵積，從而減少汽車在行駛過程中受到的空氣阻力。本研究運用Pro／Engineer造型功能建立三維模型，在Hypermesh對模型的流場計算域進行網格劃分，然後將網格導入Fluent中進行倣真計算。經過對後視鏡和門把手內置模型與後視鏡和門把手外置模型的比較分析，得齣後視鏡和門把手內置能有效的降低汽車的風阻繫數，減少汽車在行駛過程中受到的空氣阻力。
차신조형직접결정료기차재행사과정중수도적공기조력적대소。장기차적후시경화문파수내치능사차신정체경가부합류선형，강저약3％적정차영풍면적，종이감소기차재행사과정중수도적공기조력。본연구운용Pro／Engineer조형공능건립삼유모형，재Hypermesh대모형적류장계산역진행망격화분，연후장망격도입Fluent중진행방진계산。경과대후시경화문파수내치모형여후시경화문파수외치모형적비교분석，득출후시경화문파수내치능유효적강저기차적풍조계수，감소기차재행사과정중수도적공기조력。
Body styling directly determines the degree of the air resistance when the car is on the run. Building-in the rearview mirror and door handle will enable the whole construction of the car to be more consistent with the streamline, reducing about 3% of the head-on wind area. This research utilizes the function of Pro/Engineer to build a 3D model, and do meshing by Hypermesh, then guide the mesh into Fluent to carry out simulated calculation. Comparative comparisons are made between the simulated results of building-in the rearview mirror and door handle and that of building-outside ones to conclude that building-in the rearview mirror and door handle can effectively reduce the drag coefficient and the degree of the air resistance when the car is on the run..
