加速比对子午加速轴流风机气动性能影响的研究
Study on Influence of Acceleration Ratio on Aerodynamic Performance of Meridional Accelerated Axial Fan
DOI: 10.12677/MOS.2020.93034, PDF,    科研立项经费支持
作者: 李 斌, 赛庆毅*, 张 波, 丁 亮：上海理工大学能源与动力工程学院，上海
关键词: 加速比；低压区；数值模拟；流动损失；性能曲线；Speed-Up Ratio； Low Pressure Area； Numerical Simulation； Flow Losses； Characteristic Curve
摘要: 为研究不同加速比对子午加速轴流风机气动性能的影响，选取加速比1.32，标号为C的风机作为模型参照，同时分别以加速比1.55、1.43、1.22和1.12的风机A、B、D、E作为比较对象。数值模拟研究结果表明：偏离最佳加速比设计点时，随着加速比不断增大，对风机内部流场的影响主要集中在导流锥侧面以及尾部的低压区，并且尾部的流动损失占据总损失的较大部分；加速比降低，涡流面积从导流锥尾部开始向动叶区扩散，与主流交互作用明显，风机性能大幅降低。不同的加速比影响叶片做功能力显著，风机的性能曲线分布呈现出以最佳加速比数值1.32为对称的两侧递减分布规律。
Abstract: In order to study the influence of different acceleration ratios on the aerodynamic performance of meridional accelerated axial flow fans, fans with an acceleration ratio of 1.32 and labeled As C were selected as the model reference. Meanwhile, fans A, B, D and E with an acceleration ratio of 1.55, 1.43, 1.22 and 1.12 were selected as the comparison objects. The numerical simulation results show that the influence on the flow field of the fan is mainly concentrated in the low pressure area at the side of the guide cone and the tail when the fan deviates from the optimal acceleration ratio design point, and the flow loss at the tail accounts for a large part of the total loss. As the acceleration ratio decreases, the eddy current area diffuses from the tail end of the guide cone to the rotor blade area, which has obvious interaction with the main flow and greatly reduces the fan performance. Different acceleration ratios have a significant effect on the blade’s power capacity, and the fan’s performance curve distribution presents the law of decreasing distribution on both sides with the optimal acceleration ratio value of 1.32 as symmetry.
文章引用：李斌, 赛庆毅, 张波, 丁亮. 加速比对子午加速轴流风机气动性能影响的研究[J]. 建模与仿真, 2020, 9(3): 332-344. https://doi.org/10.12677/MOS.2020.93034

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