A note on the effects of roughness on acoustic propagation past curved rough surfaces.
A note on the effects of roughness on acoustic propagation past curved rough surfaces.
复制标题
关于粗糙度对通过弯曲粗糙表面的声波传播的影响的注释。
DOI：
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发表时间：
2009
影响因子：
2.4
通讯作者：
J. P. Chambers
中科院分区：
文献类型：
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作者：
Andrew E. Whelan;J. P. Chambers
先前关于声音传播经过弯曲粗糙刚性表面的工作表明，由于其光滑对应物的粗糙度范围从+6到-20 dB，阴影区中的插入损耗发生了实质性变化。这些以前的数据也导致新的传播建模的努力，通过阻抗模型，但数据和建模工作仅限于一个狭窄的范围内的粗糙度和山丘大小的粗糙度的影响。目前的努力旨在扩大粗糙度和山丘大小的范围，以探索粗糙度的影响范围。这里提出的工作证实了在以前的工作中观察到的表面粗糙度的影响，并指出粗糙度的影响开始出现，以及它们之间的过渡减少插入损耗增加插入损耗。
Previous work on sound propagation past curved rough rigid surfaces demonstrated substantial changes in the insertion loss in the shadow zone due to the roughness ranging from +6 to -20 dB from their smooth counterparts. These previous data also lead to new propagation modeling efforts to incorporate the effects of roughness via an impedance model but the data and modeling efforts were limited to a narrow range of roughness and hill sizes. The current effort was designed to expand the range of roughness and hill sizes in order to explore the range of influence of the roughness. The work presented here confirms the effects of surface roughness as observed in previous work and indicates where the effects of roughness begin to emerge as well as where they transition between decreasing the insertion loss to increasing the insertion loss.