Research Article
Numerical Investigation of Wind Erosion to the Grooved Concrete Wall Surface under a Wind-Blown Sand Movement
Table 5
Erosion rates of changed grooved and smooth wall surfaces under different wind velocities and impact angles.
| Impact angle (°) | Wind velocity (m/s) | Erosion rate of changed grooved wall surface (mg/m2·s) | Erosion rate of smooth wall surface (mg/m2·s) | Optimization rate (%) |
| 30 | 19 | 8.035E + 01 | 7.435E + 01 | −8.070 | 23 | 1.204E + 02 | 1.057E + 02 | −13.907 | 26 | 1.824E + 02 | 1.689E + 02 | −7.993 |
| 45 | 19 | 1.181E + 02 | 1.214E + 02 | 2.718 | 23 | 2.324E + 02 | 2.388E + 02 | 2.680 | 26 | 3.070E + 02 | 3.158E + 02 | 2.787 |
| 60 | 19 | 1.741E + 02 | 1.843E + 02 | 5.534 | 23 | 3.466E + 02 | 3.680E + 02 | 5.815 | 26 | 4.088E + 02 | 4.331E + 02 | 5.611 |
| 75 | 19 | 2.818E + 02 | 2.998E + 02 | 6.004 | 23 | 3.884E + 02 | 4.133E + 02 | 6.025 | 26 | 5.061E + 02 | 5.384E + 02 | 5.999 |
| 90 | 19 | 3.422E + 02 | 3.631E + 02 | 5.756 | 23 | 4.588E + 02 | 4.868E + 02 | 5.752 | 26 | 5.583E + 02 | 5.922E + 02 | 5.724 |
|
|