...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>American journal of fluid dynamics >CFD Analysis of Flow Field Development in a Direct Injection Diesel Engine with Different Manifolds
【24h】

CFD Analysis of Flow Field Development in a Direct Injection Diesel Engine with Different Manifolds

机译：歧管直喷式柴油机流场发展的CFD分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Air motion inside the intake manifold is one of the important factors, which govern the engine performance and emission of multi-cylinder diesel engines. Hence the flow phenomenon inside the intake manifold should be fully understood in order to consider the current requirement of higher engine efficiency and lower emission. In this project work, the internal flow characteristic in the intake manifold of a diesel engine is investigated computationally for the different intake manifold (Helical, Spiral and Helical-Spiral) configurations. The governing equations for unsteady, three-dimensional, compressible, turbulent flow are solved with the two equation RNG k-ε model to consider the complexity of the geometry and fluid motion. The overall flow field inside the intake manifold and various quantities, such as swirl and tumble ratios were examined for all three types of manifolds. It was concluded that spiral and helical-spiral manifold creates higher swirl than normal inlet manifold. However, volumetric efficiency was observed to be higher for helical manifold.
机译：进气歧管内部的空气运动是重要因素之一，它决定着多缸柴油机的发动机性能和排放。因此，应该充分理解进气歧管内部的流动现象，以考虑当前对更高发动机效率和更低排放的要求。在该项目工作中，针对不同的进气歧管（螺旋形，螺旋形和螺旋形-螺旋形）配置，对柴油机进气歧管中的内部流动特性进行了计算研究。考虑到几何形状和流体运动的复杂性，使用两个方程RNGk-ε模型求解了非定常，三维，可压缩，湍流的控制方程。对所有三种类型的歧管都检查了进气歧管内部的总流场和各种量，例如涡旋和滚流比。得出的结论是，螺旋形和螺旋-螺旋形歧管产生的旋涡比普通进气歧管高。然而，对于螺旋形歧管，观察到体积效率更高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号