垂直混合流装置的热量生产分析,具有不同的导向午线
Yanjun Li1, Yi Zhong1, Fan Meng1,2
1Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China.
Entropy (Basel, Switzerland)
|July 8, 2023
概括
这项研究通过调整导向午线来优化混合流动的性能. 较小的引导出口直径在较低的流速下提高了头部和效率,而较大的直径在较高的流速下提高了性能.
科学领域:
- 流体力学 流体力学 流体力学
- 液压工程 液压工程 液压工程
- 轮机的机械设备
背景情况:
- 混合流在各种应用中至关重要.
- 优化它们的液压性能对于能源效率至关重要.
- 导风的设计显著影响了的效率和流量特性.
研究的目的:
- 为了研究引导午线对混合流的外部特征和内部流量场的影响.
- 用生产理论分析液压损失的分布.
- 为了确定最佳的导风扇尺寸,以提高的效率.
主要方法:
- 建造了七个不同的导航风午线.
- 使用计算流体动力学 (CFD) 模拟.
- 应用生产理论来量化液压损失.
主要成果:
- 在0.7 Q_des.下,从350 mm降低引导出口直径 (D_gvo) 到275 mm,增加了2.78%和3.05%的头部和效率,分别为2.78%和3.05%.
- 将D_gvo从350毫米增加到425毫米,在1.3 Q_des.时,提高了4.49%和3.71%的头部和效率.
- 流量分离和过高的流量率影响了导向和输出通道中的产量,随着D_gvo和流量变化而变化.
结论:
- 导向午线设计极大地影响混合流的性能.
- 最佳D_gvo取决于运行流速以最大限度地减少液压损失.
- 这些发现为通过优化导翼几何学来提高站效率提供了指导.
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