0引言有限元方法(Finite Element Method)随着电子计算机的发展而迅速发展起来的一种现代计算方法。它是50年代首先在连续体力学领域、动态特性分析中应用的一种有效的数值分析方法,随后很快广泛的应用于求解热传导、电磁场、流体力学...0引言有限元方法(Finite Element Method)随着电子计算机的发展而迅速发展起来的一种现代计算方法。它是50年代首先在连续体力学领域、动态特性分析中应用的一种有效的数值分析方法,随后很快广泛的应用于求解热传导、电磁场、流体力学等连续性问题。Sergey等人[1]曾基于有限元的方法做过气泡动力学方面的分析。本文基于有限元方法。展开更多
The mechanism of ultrasonic desorption of sulfur dioxide from citrate solution was investigated mathematically based on the characteristics of ultrasonic wave.The factors influencing ultrasonic desorption of sulfur di...The mechanism of ultrasonic desorption of sulfur dioxide from citrate solution was investigated mathematically based on the characteristics of ultrasonic wave.The factors influencing ultrasonic desorption of sulfur dioxide were discussed theoretically and the mechanism was verified by experiments.The results showed that it was feasible to remove sulfur dioxide from citrate solution with ultrasonic field in theory and on the laboratory scale.There was a greater effect of ultrasonic frequency and gas content in solution as well as solution properties on sulfur dioxide desorption.The sulfur dioxide desorption efficiency could be improved rapidly by introducing cavitation bubble nucleus,such as adding trace argon gas.A lower ultrasonic frequency might result in higher desorption efficiency.Giving a proper stirring to the solution,the SO2 desorption efficiency enhancement could be increased by 20%—30% over the control value.The higher the initial concentration of sulfur dioxide in citrate,the higher the desorption efficiency.展开更多
文摘0引言有限元方法(Finite Element Method)随着电子计算机的发展而迅速发展起来的一种现代计算方法。它是50年代首先在连续体力学领域、动态特性分析中应用的一种有效的数值分析方法,随后很快广泛的应用于求解热传导、电磁场、流体力学等连续性问题。Sergey等人[1]曾基于有限元的方法做过气泡动力学方面的分析。本文基于有限元方法。
文摘The mechanism of ultrasonic desorption of sulfur dioxide from citrate solution was investigated mathematically based on the characteristics of ultrasonic wave.The factors influencing ultrasonic desorption of sulfur dioxide were discussed theoretically and the mechanism was verified by experiments.The results showed that it was feasible to remove sulfur dioxide from citrate solution with ultrasonic field in theory and on the laboratory scale.There was a greater effect of ultrasonic frequency and gas content in solution as well as solution properties on sulfur dioxide desorption.The sulfur dioxide desorption efficiency could be improved rapidly by introducing cavitation bubble nucleus,such as adding trace argon gas.A lower ultrasonic frequency might result in higher desorption efficiency.Giving a proper stirring to the solution,the SO2 desorption efficiency enhancement could be increased by 20%—30% over the control value.The higher the initial concentration of sulfur dioxide in citrate,the higher the desorption efficiency.
