| 分流对冲式集沙仪设计与性能试验 |
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| 引用本文： | 宋 涛,陈 智,麻 乾,司志民,刘海洋,宣传忠.分流对冲式集沙仪设计与性能试验[J].农业机械学报,2015,46(9):173-177. |
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| 作者姓名： | 宋 涛 陈 智 麻 乾 司志民 刘海洋 宣传忠 |
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| 作者单位： | 内蒙古农业大学,内蒙古农业大学,内蒙古农业大学,内蒙古农业大学,内蒙古农业大学,内蒙古农业大学 |
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| 基金项目： | 国家自然科学基金资助项目（41361058、41161045） |
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| 摘 要： | 集沙仪是观测风沙流结构和研究风沙移动规律的必备仪器。针对强风环境下集沙仪内部风沙的有效分离问题,提出了分流气体对冲法,设计了分流对冲式集沙仪,阐述了分流气体对冲法的设计原理和分流对冲式集沙仪的参数分析理论,并在利用Fluent软件对其风沙分离器进行数值模拟的基础上进行了风洞试验验证和性能分析。结果表明,采用该方法的分流对冲式集沙仪具备了较高的降速性能和抗强风性能,排气口风速降幅达88.44%,排沙口风速降幅达90%,保证了集沙仪内部风沙的有效分离,平均集沙效率达90.15%,等动力性达93.27%,符合集沙仪设计的基本原则,制作成本低,能较好地满足风洞试验和风蚀观测要求。
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| 关 键 词： | 分流对冲式集沙仪 风沙分离器 集沙效率 设计 性能试验 |
Design and Performance Experiment of Shunt-hedging Sand Sampler |
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| Song Tao,Chen Zhi,Ma Qian,Si Zhimin,Liu Haiyang and Xuan Chuanzhong.Design and Performance Experiment of Shunt-hedging Sand Sampler[J].Transactions of the Chinese Society of Agricultural Machinery,2015,46(9):173-177. |
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| Authors: | Song Tao Chen Zhi Ma Qian Si Zhimin Liu Haiyang and Xuan Chuanzhong |
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| Institution: | Inner Mongolia Agricultural University,Inner Mongolia Agricultural University,Inner Mongolia Agricultural University,Inner Mongolia Agricultural University,Inner Mongolia Agricultural University and Inner Mongolia Agricultural University |
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| Abstract: | Sand sampler is necessary for studying sand flow structure and sand movement law. In order to solve the effective separation problem inside sand sampler under the strong wind environment, this paper proposed a diversion gas hedging method. A shunt-hedging sand sampler was designed, and the design principle of diversion gas hedging method and parameters analysis for shunt-hedging sand sampler were described. The wind tunnel experiment and performance analysis on a wind-sand separator were carried out by Fluent software based on numerical simulation. The results showed that the proposed shunt-hedging sand sampler showed a high deceleration and anti strong winds performance. The deceleration magnitude of exhaust port was 88.44%, and the deceleration magnitude of desilting-port was 90%, which ensured the effective separation of wind-sand inside a sand sampler. The average sampling efficiency was 90.15%, and the equal dynamic performance was 93.27%, which was consistent with the basic requirements of designing a sand sampler. It also had low production cost, and could better satisfy the needs of wind tunnel experiments and erosion observation. |
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| Keywords: | Shunt-hedging sand sampler Wind-sand separator Sampling efficiency Design Performance experiment |
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