| 基于CFD的专用离心风机内部流场特性 |
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| 引用本文： | 朱成云,周宏平,茹煜,贾志成.基于CFD的专用离心风机内部流场特性[J].农业工程,2013,3(2):56-60. |
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| 作者姓名： | 朱成云 周宏平 茹煜 贾志成 |
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| 作者单位： | 南京林业大学，南京210037 |
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| 基金项目： | 国家林业公益性行业科研专项经费项目(项目编号:201004052);江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 本工作运用CFD技术的FLUENT软件建立了6HWF-20型高射程喷雾喷粉机的专用风机模型并进行了内部流场模拟，获得了转速为2 372 r/min时计算收敛后风机内部流场的速度矢量分布和压力分布情况，并通过优化风机叶片进口安装角和蜗舌的形状、尺寸，改善了风机内部流场。同时获得了6种转速下风机出口处的平均速度，并通过试验进行了验证。结果表明，模拟结果与试验结果吻合，基于FLUENT软件下建立的专用风机模型和模拟方法是可行的，为采用CFD技术进一步改善风机内部流场，提高风机出口速度，更有效地实现高射程喷雾喷粉功能具有重要的意义。
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| 关 键 词： | CFD 喷雾喷粉机 离心风机 内部流场 |
Internal Flow in Special Centrifugal Fan Based on CFD |
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| Zhu Chengyun,Zhou Hongping,Ru Yu and Jia Zhicheng.Internal Flow in Special Centrifugal Fan Based on CFD[J].Agricultural Engineering,2013,3(2):56-60. |
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| Authors: | Zhu Chengyun Zhou Hongping Ru Yu and Jia Zhicheng |
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| Abstract: | FLUENT software of CFD technology was utilized to establish a dedicated fan model of 6HWF-20 high-range sprayer-duster and simulate internal flow field.The fan flow field velocity distribution and pressure distribution were obtained during the rotational velocity of 2 372 rmin after convergence of calculation.Internal flow field of fan was improved by changing the optimization of wind turbine blade inlet installation angle and volute tongue shape and size.The mean velocity of the fan outlet were obtainedand under 6 velocity，which was verified by tests.The results showed that the simulation results agreed well with the experimental results.It could be concluded that established simulated mechod based on the FLUENT software indicated fan model and the simulation method were feasible.It has important significance to improve the internal flow field of wind machine.The improvement of fan outlet velocity wuld increase the implementation of high-range spraying and dusting function using CFD technology. |
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