摘要
本文通过二维流体力学基本方程的数值模拟,探讨了均匀行进波状态时的阴影强度分布特性。两个Rayleigh数的局部行进波形成过程的计算比较说明局部行进波的稳定性依赖于Rayleigh数的大小。在稳定区间内局部行进波的宽度随Rayleigh数的增加而增加。最后对一个时间周期上行进波场进行平均后说明,场的平均值可以很好的表征双局部行进波特性。
The distribution of shadowgraph intensities in uniform traveling wave is investigated by means of numerical simulation of 2-D equations of hydrodynamics.The comparison of the calculated formation processes of localized traveling wave for two Rayleigh numbers shows that the stability of localized traveling wave depends on Raleigh number,and the width of the localized wave in the interval of stable increases with Rayleigh number.The intensity of traveling wave field averaged in a time period demonstrates that the characteristics of doubly localized traveling wave can be well described by the averaged wave field.
出处
《水利学报》
EI
CSCD
北大核心
2004年第12期56-61,共6页
Journal of Hydraulic Engineering
