气泡半径和含量对含气泡海水声波速度的影响

通过对含气泡的海水水体声波速度的研究，分析了气泡半径和含量对海水声波速度（声速）的影响。气泡半径与海水深度的关系为，随着海水深度变浅，气泡半径逐渐增大。声速与气泡半径的关系为：气泡含量很小时，随着气泡半径的增大，声速先逐渐增大，然后保持平稳，最后缓慢减小，且声速变化幅度较小；气泡含量逐渐增大时，随着气泡半径的增大，声速都逐渐增大，且气泡含量不同，声速变化范围不同。声速与气泡含量的关系为：气泡含量较小时，气泡含量增加，声速逐渐减小；气泡含量较大且气泡半径小于临界半径时，气泡含量增加，声速逐渐减小，气泡半径大于临界半径时，气泡含量增加，声速先减小后逐渐增大，并且在气泡含量逐渐增大的不同阶段，声速的变化范围不同。

Study on the Bubble Radius and Content Effect on the Acoustic Velocity of Seawater with Bubbles

Through the study on the acoustic velocity of seawater with gas bubbles,the conclusion was obtained as follows.(1) The relationship between the bubble radius and the seawater depth was that the bubble radius was bigger as the seawater was shallower.(2) The relationship between the acoustic velocity and the bubble radius was that when the bubble content was very little,with the bubble radius becoming larger,the acoustic velocity increased gradually at first and then keep unchanged and finally decreased slowly,and the extent of the acoustic velocity variation was not large;when the bubble content increased gradually,with the bubble radius becoming larger,the acoustic velocity increased gradually,and the varying range of the acoustic velocity was different if the bubble content was varied.(3) The relationship between the acoustic velocity and the bubble content was that when the bubble content was small,with the bubble content increasing,the acoustic velocity decreased gradually;when the bubble content was larger and the bubble radius was smaller than the critical radius,with the bubble content increasing,the acoustic velocity decreased gradually;when bubble radius was bigger than the critical radius,with the bubble content increasing,the acoustic velocity decreased at first and then increased gradually.Furthermore,in every state of the bubble content increasing the varying range of the acoustic velocity was different.