期刊文献+

Calculation on Cylinder Pressure Fluctuation by Using the Wave Equation in KIVA Program 被引量:5

Calculation on Cylinder Pressure Fluctuation by Using the Wave Equation in KIVA Program
下载PDF
导出
摘要 Cylinder pressure fluctuation during combustion process of internal combustion engine is closely related to combustion noise and knock.The current studies are based on cylinder pressure test to obtain information on combustion noise and knock,but there is little for simulation of combustion pressure fluctuation.Based on effects of combustion process in the combustion chamber on cylinder pressure by using wave equation,the mechanism of pressure fluctuation during combustion is researched with three-dimensional acoustic wave equation and flow field model of KIVA program.The cylinder pressure fluctuation curve,temperature field and acoustic field are obtained from the coupled calculation of the wave equation and KIVA program.The frequency spectrum analysis is taken with the cylinder pressure oscillation of cylinder pressure measured and calculated.The calculation result is consistent with the experimental result.This indicates that the cylinder pressure fluctuation can be correctly calculated with the wave equation.Analysis of calculation results of temperature field and acoustic field shows that sound field changes faster than flame propagates,and distribution of sound field is more complicated.Combustion pressure oscillation in the diesel engine is under highly unstable condition.This indicates that the combination of cylinder pressure fluctuation model and combustion model is an effective method to study the pressure oscillations and a new method to study the combustion noise and knock. Cylinder pressure fluctuation during combustion process of internal combustion engine is closely related to combustion noise and knock.The current studies are based on cylinder pressure test to obtain information on combustion noise and knock,but there is little for simulation of combustion pressure fluctuation.Based on effects of combustion process in the combustion chamber on cylinder pressure by using wave equation,the mechanism of pressure fluctuation during combustion is researched with three-dimensional acoustic wave equation and flow field model of KIVA program.The cylinder pressure fluctuation curve,temperature field and acoustic field are obtained from the coupled calculation of the wave equation and KIVA program.The frequency spectrum analysis is taken with the cylinder pressure oscillation of cylinder pressure measured and calculated.The calculation result is consistent with the experimental result.This indicates that the cylinder pressure fluctuation can be correctly calculated with the wave equation.Analysis of calculation results of temperature field and acoustic field shows that sound field changes faster than flame propagates,and distribution of sound field is more complicated.Combustion pressure oscillation in the diesel engine is under highly unstable condition.This indicates that the combination of cylinder pressure fluctuation model and combustion model is an effective method to study the pressure oscillations and a new method to study the combustion noise and knock.
出处 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2012年第2期362-369,共8页 中国机械工程学报(英文版)
基金 supported by National Natural Science Foundation of China (Grant No. 50706032 and No. 50476065) PhD Programs Foundation of Ministry of Education of China (Grant No. 20070056011)
关键词 COMBUSTION pressure oscillation acoustic pressure KNOCK wave equation combustion pressure oscillation acoustic pressure knock wave equation
  • 相关文献

参考文献3

二级参考文献6

  • 1匹辛格.柴油机燃烧噪声直接测量的新方法 [J].噪声与振动控制,1984,(5):34-38.
  • 2Hicking R. Cavity resonances in engine combustion chambers and some applications, [ J]. Journal of the Acoustical Society of America,1983,73(4) :1170-1178.
  • 3Pschinger F Regularities of cylinder pressure oscillation and their effects on the combustion process and noise [J]. SAE Transaction,1987,872248.
  • 4Newland D E. Wavelet analysis of vibration, part 1 : theory [ J ].Journal of Vibration and Acoustics,1994, 116(10) :409-416.
  • 5Newland D E. Wavelet analysis of vibration, part 2 : wavelet maps[J]. Journal of Vibration and Acoustics,1994, 116(10) :417-425.
  • 6李德桃,江苏工学院学报,1985年,3期,43页

共引文献36

同被引文献44

引证文献5

二级引证文献20

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部