| 陈晶晶,邹彬彬,王润田.关于参量阵声源阵长的讨论[J].声学技术,2016,35(5):426~429 |
| 关于参量阵声源阵长的讨论 |
| Discussion on parametric acoustic array length |
| 投稿时间：2016-04-08 修订日期：2016-06-18 |
| DOI：10.16300/j.cnki.1000-3630.2016.05.007 |
| 中文关键词: 参量阵 阵长 KZK方程 声源级 |
| 英文关键词: parametric acoustic array array length Khokhlov-Zabolotskaya-Kuznetsov(KZK) equation source level |
| 基金项目:上海市科委“科技创新行动计划”-海底管线探测声纳技术项目（12231203800） |
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| 中文摘要: |
| 针对目前常用的有效阵长来估算参量阵阵长所得的结果与实际测量得到结果有较大误差的情况，提出了通过KZK（Khokhlov-Zabolotskaya-Kuznetsov）方程的数值计算来得到差频声场的声源级，再由声源级来判断参量阵的形成情况，从而计算得到阵长。针对扩散限制阵的情况进行了仿真，并对计算得到的阵长通过水池实验测量结果验证了数值计算方法的正确性。分析了有效阵长计算结果与实验测量结果间误差太大，但是KZK方程数值计算的结果与测量结果一致的原因。最后对同一换能器在不同发射电压下的参量阵阵长的变化做了对比分析。 |
| 英文摘要: |
| There is considerable discrepancy between the computational result of conventional formula and the measuring result on parametric acoustic array length. Aiming at these situations, the array length would be calculated by the numerical method of KZK (Khokhlov-Zabolotskaya-Kuznetsov) equation's numerical solution. Array lengths of the diffusion-limited source in water are measured in tank experiment, and the numerical calculation results agree with the measuring results. The cause why the computational results of using the effective array length formula cannot match with experimental results, but the numerical result of KZK equation can, is found. Finally, the change of parametric acoustic array length with different transmitting voltages is analyzed. |
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