本文由计算和实验首次说明在边界层入口处施加扰动能减轻固粒对壁面的磨损, 而且加入扰动的强度越大, 磨损量越小。 该方法比壁面加肋条具有更好的抗磨效果, 且负面作用较小, 结论对工程应用有指导意义。
The numerical and experimental results show that exerting disturbance in the entrance of boundary layer can reduce erosion caused by particles. The lager amplitude of disturbance is, the erosion amount is. It is drawn that exerting disturbance in the entrance of boundary layer is more effective for reducing erosion than adding ribs on the wall. The results given in the paper are helpful for practical usage.
参考文献
| [1] | Wang B Q;Geng G Q;Levy V .Erosion-corrosion of 10A Steel Eroded at Low Velocity by CFBC Bed Material[J].Wear,1992,155:137-152. |
| [2] | Sommerfeld M .Modelling of Particle-Wall Collision in Confined Gas-Particle Flows[J].International Journal of Multiphase Flow,1992,18:905-921. |
| [3] | J Z Lin;T Y Shen.Discussion on Relation between Boundary Layer and Wall Erosion Caused by Striking of Particles[J].Journal of Hydrodynamics,1991(01):72-76. |
| [4] | RASHIDI M;Hetsroni G;Banerjee .Particle-Turbulence Interaction in a Boundary Layer[J].International Journal of Multiphase Flow,1990,16:935-944. |
| [5] | 林建忠,沈天耀.挟沙水流中沙粒对底壁湍流猝发的影响[J].水利学报,1994(05):45. |
| [6] | Mengutruk M;Sverdrup E F.Calculated Tolerance of Large Electric Utility Gas Turbine to Erosion Damage by Coal Gas Ash Particles[M].ASTM Spec.Tech. Publ,1979:664. |
| [7] | X Q Song;J Z Lin;J F Zhao .Research on Reducing Erosion by Adding Ribs on the Wall in Particulate Two-phase Flows[J].Wear,1996,193:1. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%