摘要
针对煤矿井下防爆胶轮车所使用的柴油机排气歧管排气阻力较大的问题,应用SolidWorks建立柴油机排气歧管和烟气三维模型,使用GAMBIT软件划分网格,并使用流体性能分析软件Fluent对不同的进、排气管路进行烟气的速度流场模拟分析。根据分析结果对排气歧管进行优化,并对优化后的歧管、烟气建模,进行网格重新划分及速度流场模拟分析。分析结果表明:优化后的排气歧管涡流现象基本消失,排气阻力减小,流通性增强,切实改善了柴油机的排气性能。
To solve the problem of large exhaust resistance in the exhaust manifold of a diesel engine used in a underground explosion-proof rubber tire vehicle,the three-dimensional models of exhaust manifold and flue gas of diesel engine are established by SolidWorks,the grids are divided by GAMBIT software,and the flow fields of different inlet and exhaust pipes are simulated by using the fluid performance analysis software Fluent.According to the analysis results,the exhaust manifold is optimized,and the flow fields of the optimized manifold and flue gas are analyzed too.It is found that the optimized exhaust manifold eddy current phenomenon is basically disappeared,the exhaust resistance is reduced,and the circulation performance is enhanced,and the exhaust performance of the diesel engine is improved.
作者
代彩彩
DAI Cai-cai(AVIC Taiyuan Aviation Instrument Co.,Ltd.,Mechanical and Electrical Instrument Factory,Taiyuan 030006,China)
出处
《机械工程与自动化》
2019年第2期74-75,共2页
Mechanical Engineering & Automation
关键词
防爆柴油机
排气歧管
排气阻力
流场分析
explosion-proof diesel engine
exhaust manifold
exhaust resistance
flow field analysis
