通过在轴流中构建输入导风和扩散风几何学来提高能源性能
Duc-Anh Nguyen1,2, Cong-Truong Dinh3, Jin-Hyuk Kim4,5
1Convergence Manufacturing System Engineering (Green Process and Energy System Engineering), University of Science & Technology, Daejeon, 34113, South Korea.
Scientific reports
|January 3, 2024
概括
新的轴流设计采用先进的进口导向 (IGV) 和扩散 (DV) 几何学,显著提高了能源性能. 优化的IGV和DV设置提高了效率,并在各种操作条件下减少了流,振动和噪声.
科学领域:
- 流体力学 流体力学 流体力学
- 轮机的机械设备
- 液压工程 液压工程 液压工程
背景情况:
- 轴流在各种行业中至关重要,但它们的能源性能,特别是在设计之外的点上,需要优化.
- 输入导风扇 (IGV) 和扩散风扇 (DV) 显著影响的效率和运行稳定性.
- 减少能源损耗和提高液压性能是轴流设计的关键挑战.
研究的目的:
- 提高轴流在最佳效率点 (BEP) 和外设计条件下的能源性能.
- 研究先进的IGV和DV几何形状,包括可调节的设置,对效率和头的影响.
- 分析能量损失机制及其与流量特征和操作参数的相关性.
主要方法:
- 开发和分析先进的,不对称的IGV与翼型.
- 实施和测试新的扩散器 (DV) 几何形状和可调节的DV设置角度.
- 集成可调节的IGV和DV,用于全面的性能评估和能源损耗分析.
主要成果:
- 与参考模型相比,升级后的IGV和新的DV显著提高了BEP的效率 (1.456%) 和总人数 (5.756%).
- 新的DV设计减少了不稳定的流,从而在所有流速下降了振动和噪声.
- 可调节的DV角度优化了高流量 (正角度) 和低流量 (负角度) 区域的性能,而组合可调节的IGV和DV进一步增强了总体头部.
结论:
- 先进的IGV和DV设计,特别是可调节的设置,在轴流的能量性能和运行稳定性方面提供了显著的改进.
- 带有翼形状的不对称IGV和优化的DV几何结构有效地减少了液压损失,并减轻了流动引起的噪音和振动.
- 了解低速区,生成和流量之间的关系对于进一步优化在不同操作条件下的性能至关重要.
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