| 输电线雾凇覆冰过程的二维数值模拟 |
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| 引用本文： | 郭昊,刘沛清,屈秋林,刘胜春,王景朝,邸玉贤. 输电线雾凇覆冰过程的二维数值模拟[J]. 工程力学, 2011, 0(5): 212-218,225 |
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| 作者姓名： | 郭昊 刘沛清 屈秋林 刘胜春 王景朝 邸玉贤 |
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| 作者单位： | 北京航空航天大学流体力学教育部重点实验室;中国电力科学研究院工程力学研究所; |
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| 基金项目： | 国家自然科学基金项目(10902007) |
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| 摘 要： | 基于拉格朗日法提出了一种输电线表面雾凇覆冰过程的二维数值模拟方法.采用同位网格上的SIMPLE算法求解非定常不可压缩流动的RANS方程和SST-κ-ω湍流模型以获得空气流场;采取拉格朗日法跟踪流场中过冷水滴的运动轨迹得到输电线表面各控制体的瞬时局部碰撞率;求解基于Messinger控制容积法建立的覆冰热力学方程以获得各...
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| 关 键 词： | 雾凇覆冰 数值模拟 拉格朗日法 局部碰撞率 边界移动 |
TWO-DIMENSIONAL NUMERICAL SIMULATION OF THE RIME ACCRETION PROCESS ON TRANSITION LINES |
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| GUO Hao,LIU Pei-qing,QU Qiu-lin,LIU Sheng-chun,WANG Jing-chao,DI Yu-xian,Ministry of Education,Beijing ,China. TWO-DIMENSIONAL NUMERICAL SIMULATION OF THE RIME ACCRETION PROCESS ON TRANSITION LINES[J]. Engineering Mechanics, 2011, 0(5): 212-218,225 |
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| Authors: | GUO Hao LIU Pei-qing QU Qiu-lin LIU Sheng-chun WANG Jing-chao DI Yu-xian Ministry of Education Beijing China |
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| Affiliation: | GUO Hao1,LIU Pei-qing1,QU Qiu-lin1,LIU Sheng-chun2,WANG Jing-chao2,DI Yu-xian2(1.Key Laboratory of Fluid Mechanics(Beihang University),Ministry of Education,Beijing 100191,China,2.Department of Engineering Mechanics,China Electric Power Research Institute,Beijing 100055,China) |
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| Abstract: | Based on the Lagrange method,a 2-D icing model is introduced to simulate the rime accretion process on transmission lines.The governing equations for the airflow,i.e.,the unsteady incompressible RANS equations and the SST-k-? turbulent model,are solved by the semi-implicit method for pressure linked equations(SIMPLE) on a collocated grid.The Local Collision Efficiency(LCE),one important parameter of the icing model,is evaluated on the basis of time-dependent airflow computations and water droplet trajectory calculations.The model computes the thermodynamic conditions and the icing rate as a function of the angle around the cylinder using the classical Messinger equation.The results show that the proposed ice model performed well in simulating and predicting ice-grown shapes under dry icing conditions. |
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| Keywords: | rime accretion numerical simulation Lagrange method local collection efficiency dynamic mesh |
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