Abstract
In order to obtain stress of blade steel with high speed water droplet impact and provide basic parameters to study liquid corrosion of steam turbine blade, numerical model was developed to study high speed water droplet-blade steel impact. In the model, smoothed particle hydrodynamics (SPH) method was adopted to describe water droplet, and the conventional finite element method was used to discretize the blade steel. The effect of fluid-structure interaction between water droplet and steel was considered. Impact cases with different speeds and droplet diameters were investigated, and the transient pressure inside water droplet was obtained. Meanwhile, compression, expansion and splash of water droplet were described. On the other hand, the transient stress and its affect region inside blade steel, the variety of impact stress with different diameter and impact speed water droplets were obtained. The numerical results show rationality compared with the experimental data provided by other scholars, so the results can be used for liquid corrosion fatigue analysis of steam turbine blade.
| Original language | English |
|---|---|
| Pages (from-to) | 76-81 |
| Number of pages | 6 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 28 |
| Issue number | 17 |
| State | Published - 15 Jun 2008 |
Keywords
- Blade
- Dynamic response
- High-speed impact
- Smoothed particle hydrodynamics
- Water droplet