摘要
推导了非敏感CFL数CE/SE方法的计算格式,用来对激波管及脉冲爆震发动机一维内流场进行计算。计算结果表明,此非敏感CFL数CE/SE方法能有效地捕捉爆震波等强间断;当CFL数小于0.1(或远小于1)时,原CE/SE方法计算格式会产生数值震荡导致计算结果失真,而此计算格式仍能够客观真实地反映流场特点。计算结果对CE/SE方法的应用及脉冲爆震发动机内流场的研究具有一定的参考价值。
A new CE/SE method based on courant number insensitive scheme （CNIS） was deduced to simulate shock tube problem and calculate one-dimensional interior flow field of pulse detonation engine （PDE）. Calculated results showed that this new kind of CE/SE method can effectively catch the strong discontinuities as dotonation wave. While courant number is smaller than 0.1 （or far smaller than 1）, the original CE/SE method may cause numerical oscillation and result in calculated result distortion, however the new CE/SE method can still reflect characteristics of interior flow field objectively and really. All of the calculated results have important reference price in application of CE/SE method and research on interior flow field of pulse detonation engine.
出处
《火炮发射与控制学报》
北大核心
2008年第2期28-31,41,共5页
Journal of Gun Launch & Control
基金
国家自然科学基金项目资助(10672080)
