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探索了动力设备中蒸汽在水下有限空间内喷注时喷注噪声的声源与辐射规律，发现蒸汽喷注噪声声压级及频谱和水的过冷度有直接关系；喷头孔径对最大喷注噪声声压级的影响不大；但较大的孔径可以使最大声压级出现的位置向低温处移动，而较小的孔间距可降低喷注噪声。同时发现蒸汽水下喷注噪声的产生机理和空气动力性噪声的产生机理是不完全相同的，因此蒸汽或空气在大气中喷注噪声的研究结果不能直接应用于蒸汽水下喷注噪声。图９参１１
Explores the sound source and radiation law of the injection noise when the steam is injected in a limited space under the power equipment and finds that the sound pressure level of the steam injection noise and the spectrum are directly related to the degree of subcooling of the water. Note that the effect of noise level is not significant; however, the larger aperture allows the position where the maximum SPL appears to move to lower temperatures, while the smaller hole spacing reduces the injection noise. At the same time, it is found that the generation mechanism of steam injection noise is not identical to the generation mechanism of aerodynamic noise. Therefore, the research results of steam or air injection noise in the atmosphere can not be directly applied to the noise of underwater steam injection. Figure 9 Senate 11