| 联合收获机惯性分离室内气固两相流数值模拟 |
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| 引用本文： | 蒋恩臣,王立军,刘坤,孙占峰.联合收获机惯性分离室内气固两相流数值模拟[J].江苏大学学报(自然科学版),2006,27(3):193-196. |
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| 作者姓名： | 蒋恩臣 王立军 刘坤 孙占峰 |
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| 作者单位： | 1. 华南农业大学,工程学院,广东,广州,510640
2. 东北农业大学,工程学院,黑龙江,哈尔滨,150030 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 利用Fluent软件中K-ε湍流模型和离散相模型对4ZTL-1800气吸式联合收获机惯性分离室气固两相流特征进行数值模拟计算分析．从流体动力学和湍流理论出发建立了气相湍流模型，根据牛顿第二定律建立了固相数学模型．通过建立的模型和边界条件模拟气体流动，利用双向耦合拉格朗日法追踪颗粒运动轨迹．通过数值计算，得到气流场压力分布规律以及颗粒相运动轨迹及其沉降和分离过程．研究结果为进一步改善惯性分离室内流场的分布规律，提高籽粒的沉降效率，减少气流的携带损失提供了依据．
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| 关 键 词： | 联合收获机 分离室 颗粒运动轨迹 气固两相流 数值模拟 |
| 文章编号： | 1671-7775(2006)03-0193-04 |
| 修稿时间： | 2005年12月15 |
Numerical simulation of gas-particle flow in inertia separation chamber of stripper combine harvester |
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| JIANG En-chen,WANG Li-jun,LIU Kun,SUN Zhan-feng.Numerical simulation of gas-particle flow in inertia separation chamber of stripper combine harvester[J].Journal of Jiangsu University:Natural Science Edition,2006,27(3):193-196. |
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| Authors: | JIANG En-chen WANG Li-jun LIU Kun SUN Zhan-feng |
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| Abstract: | To understand the air-particle flow characteristic in the inertia separation chamber of 4ZTL-1800 Rice Combine Harvester,numerical simulation was done using software Fluent 5.0.The differential equations of airflow were developed based on hydrodynamics and theory of turbulence.The differential(equation) of solid particles was given by Newton's second law.A comprehensive model was integrated.The numerical simulation of the airflow,particle trajectory and separation and deposition processes in the chamber was carried out.The result will be useful for improving airflow distribution,grain deposition and separation efficiency in the chamber. |
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| Keywords: | combine harvester inertia separation chamber particle trajectory air-particle flow numerical simulation |
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