25%K_(2)O-30%Na_(2)O-45%SiO_(2)熔渣中超声空化行为的数值模拟  

Numerical Simulation of Ultrasonic Cavitation Behavior in 25%K_(2)O-30%Na_(2)O-45%SiO_(2)Slag

作　　者：焦石岩 廖相巍 闵义[1,2,3] 刘承军 JIAO Shi-yan;LIAO Xiang-wei;MIN Yi;LIU Cheng-jun(Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education),Northeastern University,Shenyang 110819,China;School of Metallurgy,Northeastern University,Shenyang 110819,China;State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan 114021,China)

机构地区：[1]东北大学多金属共生矿生态化冶金教育部重点实验室,辽宁沈阳110819 [2]东北大学冶金学院,辽宁沈阳110819 [3]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114021

出　　处：《东北大学学报（自然科学版）》2023年第11期1584-1590,共7页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51974075);海洋装备用金属材料及其应用国家重点实验室开放基金资助项目(SKLMEA-K202001)。

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1020℃条件下25%K_(2)O-30%Na_(2)O-45%SiO_(2)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.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%K_(2)O-30%Na_(2)O-45%SiO_(2)slag at 1020℃.The results show that at the cavitation nucleus of 15μm and the sound pressure of 3.039MPa,the cavitation bubbles change from one oscillation collapse to transient cavitation with multiple oscillations before collapse at 25kHz,to acyclic steady-state cavitation at 36kHz,and to periodic steady-state cavitation at 63kHz,showing an overall decrease in vibration amplitude and increase in collapse time.At cavitation nucleus of 15μm and frequency of 20kHz,the cavitation bubble changes from steady-state cavitation to one-oscillation collapse transient cavitation at 2.4MPa,to two-oscillation collapse transient cavitation at 17MAbstract: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%K_(2)O-30%Na_(2)O-45%SiO_(2)slag at 1020℃.The results shoAbstract: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%K_(2)O-30%Na_(2)O-45%SiO_(2)slag at 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%SiO_(2)slag at 1020℃.The results show that at the cavitation nucleus of 15μm and the sound pressure of 3.039MPa,the cavitation bubbles change from one oscillation collapse to transient cavitation with multiple oscillations before collapse at 25kHz,to acyclic steady-state cavitation at 36kHz,and to periodic steady-state cavitation at 63kHz,showing an overall decrease in vibration amplitude and increase in collapse time.At cavitation nucleus of 15μm and frequency of 20kHz,the cavitation bubble changes from steady-state cavitation to o

关 键 词：熔渣 超声 空化 数值模拟 

分 类 号：TF7[冶金工程—钢铁冶金]