【摘 要】
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The underwater acoustic field influenced by a selected ocean intal wave was computed using the Parabolic Equation (PE) method and split-step difference algorith
【机 构】
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School of Civil Engineering, Tianjin University, Tianjin 300072, China
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The underwater acoustic field influenced by a selected ocean intal wave was computed using the Parabolic Equation (PE) method and split-step difference algorithm in this paper. Acoustic field is formed by sound source with different frequency covering the range of radiation noise of ships and submarines. Owing to the adoption of complex variables, sparse matrix, Gaussian source and analysis on the grid size, numerical results are achieved smoothly. The results show that intal wave’s influence on underwater sound can’t be neglected, especially for higher sound frequency. So it’s necessary to take intal wave into account in identifying radiation noise of ships and submarines, namely for sound intensity, transmission loss and spectra shape.
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