范氏气体准静态开放式系统与气枪子波模拟  

The open quasi-static thermodynamic system in the condition of Van der waals gas and simulation of air gun signature

作　　者：张雪阳[1] 袁修贵[1] 朱世华[1] 赵庆献[2] 伍忠良[2] 

机构地区：[1]中南大学数学与统计学院,长沙410083 [2]广州海洋地质调查局,广州510760

出　　处：《物探化探计算技术》2014年第4期458-461,共4页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：127工程(GZH201100307)

摘　　要：在范氏气枪模型中,理想气体准静态开放式系统方程通常被直接应用在范氏气体条件下,从而引起模拟结果的偏差。这里详细推导了范氏气体条件下准静态开放式热力学系统方程,并结合气泡振荡方程,应用四阶Runge-Kutta方法进行子波模拟。经过与实际数据对比分析,得到比原范氏气枪模型更接近实测子波的结果。Generally,the open quasi-static thermodynamic system in the conditions of ideal gas is used in the single air-gun wavelet model of Van der waals gas.In this paper,a new equation of the open quasi-static thermodynamic system in the condi-tion of Van der waals gas is given.A single air-gun wavelet model of Van der waals as based on the new equation and the bub-ble oscillation theory is established.It can be solved by the fourth order Runge--Kutta method.With the experiment,the result shows that the modeling wavelet is very close to the measured wavelet.

关 键 词：准静态开放式热力学系统 范氏气体 气枪震源 子波模拟 

分 类 号：P631.46[天文地球—地质矿产勘探]