【摘要】 根据气泡的声学特性,对掺气水流中气泡可能对减压实验中声压级差和空化噪声强度测量结果造成的影响作了初步的理论探讨。研究表明,气泡对声波的吸收对空化初生的判别并无影响,对空化噪声强度的影响不可忽略。更多还原

【Abstract】 The effect of the bubbles in aeration flow on the Sound Pressure Level(SPL) difference and the cavitation noise intensity in pressure relief model is investigated based on the acoustical characteristics of the bubbles.The results show that the bubbles’ absorbability to noise has no influence on the judgement of cavitation occurrence,but has obvious effect on the intensity of the cavitation noise.更多还原