【摘要】 为了明晰熔渣体系中超声的空化行为，应用Rayleigh-Plesset方程模拟1 020℃条件下25%K₂O-30%Na₂O-45%SiO₂熔渣中空化泡的运动行为.结果表明，在空化核尺寸15μm,声压振幅3.039 MPa的条件下，空化泡在频率25 kHz由一次振荡溃灭变为多次振荡才溃灭的瞬态空化，36 kHz变为无周期稳态空化，63 kHz变成周期稳态空化，呈现振幅降低和溃灭时间变长的特点.在空化核尺寸15μm,频率20 kHz的条件下，空化泡在声压2.4 MPa处由稳态空化变为一次振荡溃灭的瞬态空化，17 MPa处变为2次振荡溃灭的瞬态空化，170 MPa处变为多次振荡才溃灭的瞬态空化，呈现振幅增大和溃灭时间变长的特点.在声压振幅3.039 MPa,频率20 kHz的条件下，空化泡在空化核2μm由稳态空化变为一次振荡溃灭空化，21μm变为多次振荡才溃灭的空化，33μm变为非周期稳态空化，呈现振幅降低和溃灭时间变长的特点.更多还原

【Abstract】 To clarify the cavitation behavior of ultrasonic in the slag system, the Rayleigh-Plesset equation was applied to simulate the motion behavior of cavitation bubbles in the 25% K₂O-30% Na₂O-45% SiO₂ slag at 1 020 ℃. The results show that at the cavitation nucleus of 15 μm and the sound pressure of 3.039 MPa, the cavitation bubbles change from one oscillation collapse to transient cavitation with multiple oscillations before collapse at 25 kHz, to acyclic steady-state cavitation at 36 kHz, and to periodic steady-state cavitation at 63 kHz, showing an overall decrease in vibration amplitude and increase in collapse time. At cavitation nucleus of 15 μm and frequency of 20 kHz, the cavitation bubble changes from steady-state cavitation to one-oscillation collapse transient cavitation at 2.4 MPa, to two-oscillation collapse transient cavitation at 17 MPa, and to multi-oscillation collapse transient cavitation at 170 MPa, showing an overall increase in vibration amplitude and collapse time. At sound pressure of 3.039 MPa and frequency of 20 kHz, the cavitation bubble changed from periodic steady-state cavitation to one-oscillation collapse transient cavitation at 2 μm, then to multi-oscillation collapse transient cavitation at 21 μm, and finally to acyclic steady-state cavitation at 33 μm, showing an overall decrease in vibration amplitude and an increase in collapse time.更多还原