| 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 |
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| 作者姓名： | 陶跃群 蔡军 刘斌 淮秀兰 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金（51376181）资助 |
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| 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。
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| 关 键 词： | 水力空化 空泡动力学 自由基 污水处理 |
| 收稿时间： | 2016-05-25 |
| 修稿时间： | 2016-09-06 |
Bubble dynamic analysis and hydroxyl radical production calculation at bubble collapse in turbulence flow |
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| Authors: | TAO Yuequn CAI Jun LIU Bin HUAI Xiulan |
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| Institution: | 1.Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;2.University of Chinese Academy of Sciences, Beijing 100049, China |
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| 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. |
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| Keywords: | hydrodynamic cavitation bubble dynamics hydroxyl radicals waste water treatment |
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