Analysis of the acoustic vector field in a wedge-shaped sea area

Sound propagation in the ocean is a classical underwater acoustics research problem.In traditional studies about sound propagation,researchers are primarily concerned about sound pressure fields.With the advent of acoustic vector hydrophones,particle velocity has begun to receive more attentions from researchers.In this paper,the image source method was used to analyze the three-dimensional particle velocity field in an ASA benchmark wedge with a harmonic point source(Benchmark wedge proposed by Acoustical Society of America).Integral formulas for three-dimensional particle velocity were derived based on the sound pressure solutions of Deane and Buckingham.Using numerical integration,the transmission losses of sound pressure,particle velocity,and acoustic intensity in the wedge were analyzed and the phase differences between acoustic pressure and particle velocity obtained.The results indicated that the phase difference does not vanish even at long ranges.