| 双轴桨叶式混合机内椭球颗粒混合特性模拟 |
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| 引用本文： | 兰海鹏,刘扬,贾富国,唐玉荣,沈柳杨,栗文.双轴桨叶式混合机内椭球颗粒混合特性模拟[J].农机化研究,2017(6):74-78. |
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| 作者姓名： | 兰海鹏 刘扬 贾富国 唐玉荣 沈柳杨 栗文 |
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| 作者单位： | 1. 塔里木大学 现代农业工程重点实验室，新疆阿拉尔 843300; 塔里木大学 机械电气化工程学院，新疆阿拉尔 843300;2. 东北农业大学工程学院,哈尔滨,150030;3. 塔里木大学 机械电气化工程学院,新疆阿拉尔,843300 |
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| 基金项目： | 塔里木大学校长基金硕士项目( TDZKQN201606)；塔里木大学现代农业工程重点实验室开放项目( TDNG20150102)；兵团工业科技攻关项目(2015AB039) |
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| 摘 要： | 为探讨双轴桨叶式混合机内椭球颗粒的随机运动和混合特性,采用离散元法对颗粒混合过程进行了模拟研究。从单颗粒的随机运动轨迹、颗粒群的流线运动轨迹的角度分析了颗粒运动规律及混合特征,定量描述了混合程度与转子旋转圈数的数学关系。结果表明:混合机内椭球颗粒的随机运动剧烈,径向和轴向上的混合效果良好;分层颗粒的混合均匀是在对流混合,剪切混合和扩散混合共同作用下实现的;分层颗粒的混合度与转子旋转圈数直接相关,混合度与圈数的关系符合指数增长模型。
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| 关 键 词： | 混合机 椭球颗粒 混合特性 离散元法 双轴桨叶 |
Simulation on Mixing Characteristic for Ellipsoid Particles in Twin-shaft Paddle Mixer |
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| Lan Haipeng,Liu Yang,Jia Fuguo,Tang Yurong,Shen Liuyang,Li Wen.Simulation on Mixing Characteristic for Ellipsoid Particles in Twin-shaft Paddle Mixer[J].Journal of Agricultural Mechanization Research,2017(6):74-78. |
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| Authors: | Lan Haipeng Liu Yang Jia Fuguo Tang Yurong Shen Liuyang Li Wen |
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| Abstract: | To investigate random motion and mixing characteristics of ellipsoid particles in twin-shaft paddle mixer, mixing process of particles is simulated using discrete element method in this research .Particles mixing law and mixing characteristics are analysed with the view of a single particle random motion trajectories and streamline motion trajectories diagram of particles swarm .And the mathematic relation between mixability and revolutions of agitating blades is de-scribed quantitatively .Results show that random motion of ellipsoid particles is acute , mixing performance is favorable in radial direction and axial direction .Convective mixing , shear mixing and diffusive mixing control the mixing homogeneity process of segregation particles .Mixability of segregation particles has direct correlation with revolutions .The relation be-tween mixability and revolutions conforms to the exponential growth model . |
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| Keywords: | mixer ellipsoid particles mixing characteristics discrete element twin-shaft paddle |
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