Proper orthogonal decomposition for energy convergence of shock waves under severe knock
作者: Han XuAnren YaoChunde YaoJian Gao
作者单位: 1State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
2School of Environment Science and Engineering, Tianjin University, Tianjin 300072, China
刊名: Energy, 2017, Vol.128 , pp.813-829
来源数据库: Elsevier Journal
DOI: 10.1016/
关键词: Proper orthogonal decompositionEnergy convergenceShock wave focusingSevere knockDestruction
英文摘要: Abstract(#br)Under severe knocks of internal combustion engines, parts like pistons and spark plugs are vulnerable to be damaged by energy convergence of shock waves. Furthermore, the damaged positions and failure modes have a significant regularity. In order to reveal the mechanism and avoid such damage, numerical simulations combined with detonation bomb experiments were conducted to explore the energy convergence phenomenon. Proper orthogonal decomposition was developed to extract the main pressure distributions so that the positions where energy converges can be found and the convergence modes can be recognized. Results show that energy convergence could occur in combustion chambers when severe knocks occurred. The spark plug, central region and edge region of a piston are in typical...
全文获取路径: Elsevier  (合作)
影响因子:3.651 (2012)

  • convergence 汇合
  • decomposition 分解
  • energy 能量
  • knock 敲打
  • orthogonal 直交的
  • shock 冲击冲突
  • severe 严滥
  • under 在下