摘要
随着海洋勘探逐渐向深海发展,大容量低频气枪的研究变得更加重要,降低探测波高频能量、提高低频能量成为气枪设计中亟待解决的核心问题.本文基于气泡动力学统一方程建立了大尺度低频气枪气泡动力学模型,该模型考虑了大尺度气枪气泡的迁移现象,通过模型对比证明了该模型的预测结果与真实大尺度低频气枪气泡的运动规律更加接近.本文基于该模型研究了气枪容积、工作压力、沉放深度及自由液面虚反射系数对气枪气泡迁移及压力子波等特性的影响.此外,深海勘探多使用气枪阵列增强探测压力波的能量,本文开展了不同间距和排列方式的双枪、三枪及四枪的压力子波特性研究.本文旨为新型大容量低频单枪枪体设计以及多枪组阵设计提供参考.
With the gradual development of deep-sea exploration,research on high-capacity air guns has become increasingly important.How to reduce high-frequency energy and enhance low-frequency energy is the core issue that urgently needs to be addressed in the design of air guns.In this study,we have established a large-scale low-frequency air gun bubble dynamics model based on the unified equation of bubble dynamics,considering the migration phenomenon of large-scale air gun bubbles.It has been proven that the model’s predictions more closely match the motion patterns of real large-scale air gun bubbles through model comparison.Based on this model,the influence of air gun chamber volume,operating pressure,depth,and reflection coefficient on air gun bubble migration and pressure wave characteristics is investigated.In addition,air gun arrays are commonly used to enhance the energy of pressure waves in deep-sea exploration.In this study,the effects of the spacing between double,triple,and quadruple air guns in air gun arrays,as well as different arrangements on the characteristics of pressure waves of air guns,are studied.The findings of this study may contribute to the design of new high-capacity,low-frequency single air guns and the combined design of air gun arrays.
作者
宁亦池
张帅
邱永成
刘毅
李帅
张阿漫
NING Yi-Chi;ZHANG Shuai;QIU Yong-Cheng;LIU Yi;LI Shuai;ZHANG A-Man(Nanhai Institute of Harbin Engineering University,Sanya 572024,China;School of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;Geophysical Department,China Oilfield Services Limited,Tianjin 300451,China)
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2024年第12期163-180,共18页
Scientia Sinica Physica,Mechanica & Astronomica
基金
海南省财政科技计划(编号:ZDKJ2021020)
三亚崖州湾科技城科技专项资助(编号:SKJC-2022-PTDX-013)
国家重点研发计划(编号:2022YFC2803500)
国家自然科学基金(编号:52371313,12372239)
黑龙江省自然科学基金优秀青年项目(编号:YQ2022E017)资助。
关键词
大尺度气枪气泡
气泡统一方程
气泡迁移
气枪阵列
压力子波
large-scale air gun bubble
the unified equation of bubble dynamics
bubble migration
air gun formation
pressure wave
