| 湍动剪切微米尺度粒子凝并TEMOM模型研究 |
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| 引用本文： | 于明州,江影,张凯.湍动剪切微米尺度粒子凝并TEMOM模型研究[J].力学学报,2011,43(3):447-452. |
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| 作者姓名： | 于明州 江影 张凯 |
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| 作者单位： | 1. 中国计量学院;2. 中国计量学院，流体检测与仿真研究所;3. 中国计量学院流体工程与仿真研究所; |
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| 基金项目： | 浙江省自然科学基金(Y7080394,Y6090406); 国家自然科学基金(10632070,10802083,10902105); 德国洪堡访问学者基金(1136169)资助项目~~ |
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| 摘 要： | 湍动流场中剪切凝并是导致微纳米尺度颗粒系统非稳定性的主要机理. 耦合相应的湍流计算
模型, Smoluchowski平均场理论可以有效地解决该颗粒系统的时空演化问题. 把泰
勒展开矩方法(TEMOM)应用于微纳米尺度颗粒剪切碰撞问题, 重点研究湍动剪切条件下,
Smoluchowski方程在矩方法框架内的封闭问题, 并进一步分析计算精度与展开阶数的关系.
结果表明, 所提部分四阶泰勒展开矩方法模型能以较高精度对微纳米尺度湍动剪切凝并
问题进行理论分析, 且证实微纳米尺度颗粒系统在湍动剪切凝并机理控制下存在拟自保持分
布状态特性.
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| 关 键 词： | 湍动 矩方法 泰勒展开 凝并 |
| 收稿时间： | 2010-02-24 |
| 修稿时间： | 2010-09-13 |
THE STUDY ON MICRO-SCALE PARTICLE COAGULATION DUE TO TURBULENT SHEAR MECHANISM USING TEMOM MODEL |
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| Yu Mingzhou
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Jiang Ying
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Zhang Kai.THE STUDY ON MICRO-SCALE PARTICLE COAGULATION DUE TO TURBULENT SHEAR MECHANISM USING TEMOM MODEL[J].chinese journal of theoretical and applied mechanics,2011,43(3):447-452. |
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| Authors: | Yu Mingzhou Jiang Ying Zhang Kai |
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| Institution: | 1. China Jiliang University, Hangzhou 310018, China;2. Institute of fluid engineering of China Jiliang University, Hangzhou 310018, China; |
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| Abstract: | The coagulation due to turbulent shear is the main mechanism leading to the instability of micro- and nanoparticle-laden multiphase flows.The Smoluchowski mean-filed theory is considered to be a good selection for solving this problem since it can be coupled to some turbulent models.In this study,the Taylor-expansion method of moments(TEMOM) is first applied in micro- and nanoparticle coagulation due to turbulent shear mechanism in which the closure of Smoluchowski equation as well as the relationship betwe... |
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| Keywords: | turbulence the method of moments Taylor-expansion coagulation |
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