湍流作用下空化泡的动力学分析和溃灭瞬间自由基产量计算

doi:10.7523/j.issn.2095-6134.2017.02.011

中国科学院大学学报 ›› 2017, Vol. 34 ›› Issue (2): 191-197.DOI: 10.7523/j.issn.2095-6134.2017.02.011

湍流作用下空化泡的动力学分析和溃灭瞬间自由基产量计算

陶跃群^1,2, 蔡军¹, 刘斌¹, 淮秀兰¹

1 中国科学院工程热物理研究所, 北京 100190;
2 中国科学院大学, 北京 100049

收稿日期:2016-05-25 修回日期:2016-09-06 发布日期:2017-03-15
通讯作者: 蔡军,E-mail:caijun@mail.etp.ac.cn
基金资助:
国家自然科学基金（51376181）资助

Bubble dynamic analysis and hydroxyl radical production calculation at bubble collapse in turbulence flow

TAO Yuequn^1,2, CAI Jun¹, LIU Bin¹, HUAI Xiulan¹

1 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2016-05-25 Revised:2016-09-06 Published:2017-03-15

摘要/Abstract

摘要： 基于Gilmore空化泡动力学方程，考虑液体黏性、表面张力、可压缩性、水分子扩散及导热影响，建立湍流作用下孔板空化器下游流场的空化泡动力学模型。采用四阶龙格-库塔法对该空化泡动力学模型进行数值求解，再现空化泡沿流动方向的生长、溃灭和反弹过程。采用基于稳态平衡假设的FactSage软件，以数值求解获得的空化泡内温度、压力和水分子数作为输入参数，计算和分析溃灭瞬间空化泡内的分解产物尤其是具有强氧化性的羟基自由基产量。

关键词: 水力空化, 空泡动力学, 自由基, 污水处理

Abstract: Based on Gilmore bubble dynamic equation, a model, which takes the viscosity, surface tension, compressibility, water molecular diffusion, and heat conduction into consideration, is built to describe bubble dynamic behavior in the turbulent orifice flow. The mathematical model is solved by using the fourth Runge-Kutta approach, and the cavitation bubble growth, collapse, and rebound process are described. With the temperature, pressure, and number of water molecules obtained by using the mathematical model as the input parameters, the productions of hydroxyl radicals with high oxidation under different conditions are calculated and the effecting parameters are analyzed.

Key words: hydrodynamic cavitation, bubble dynamics, hydroxyl radicals, waste water treatment

中图分类号:

O359

陶跃群, 蔡军, 刘斌, 淮秀兰. 湍流作用下空化泡的动力学分析和溃灭瞬间自由基产量计算[J]. 中国科学院大学学报, 2017, 34(2): 191-197.

TAO Yuequn, CAI Jun, LIU Bin, HUAI Xiulan. Bubble dynamic analysis and hydroxyl radical production calculation at bubble collapse in turbulence flow[J]. , 2017, 34(2): 191-197.

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湍流作用下空化泡的动力学分析和溃灭瞬间自由基产量计算

Bubble dynamic analysis and hydroxyl radical production calculation at bubble collapse in turbulence flow

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