Box-Length Requirements for Simulation of Sound from Large Structures in Jets
Box-Length Requirements for Simulation of Sound from Large Structures in Jets
复制标题
模拟喷气机中大型结构的声音的盒子长度要求
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
N. Sandham
中科院分区：
文献类型：
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作者：
E. Avital;N. Sandham
这项研究提出了对计算盒长度尺度的估计，以准确估计波包形式的大型结构发出的总声功率输出。该模型表明，两种不同的尺度主导着声音的产生：低亚音速情况下的源整体长度尺度和超音速情况下的普通源长度尺度。因此，计算框的长度必须大于其主导区域中的每个长度尺度
This study presented an estimate for the computational box length scale needed for an accurate estimate of the total acoustic power output emitted by a large scale structure in the form of a wave packet. The model shows that two different scales dominate the sound production: the source integral length scale for the low subsonic case and the plain source length scale for the supersonic case. Thus, the computational box length must be bigger than each length scale in its dominant region