Research Article
Numerical Investigation of Wind Erosion to the Grooved Concrete Wall Surface under a Wind-Blown Sand Movement
Table 4
Erosion rates of grooved and smooth wall surfaces under different groove spacings and impact angles.
| Impact angle (°) | Groove spacing (mm) | Erosion rate of grooved wall surface (mg/m2·s) | Erosion rate of smooth wall surface (mg/m2·s) | Optimization rate (%) |
| 30 | 2 | 1.357E + 02 | 7.424E + 01 | −82.786 | 4 | 1.344E + 02 | 7.436E + 01 | −80.742 | 6 | 1.331E + 02 | 7.434E + 01 | −79.042 |
| 45 | 2 | 1.494E + 02 | 1.217E + 02 | −22.761 | 4 | 1.490E + 02 | 1.216E + 02 | −22.533 | 6 | 1.471E + 02 | 1.216E + 02 | −20.970 |
| 60 | 2 | 1.773E + 02 | 1.847E + 02 | 4.006 | 4 | 1.766E + 02 | 1.848E + 02 | 4.437 | 6 | 1.778E + 02 | 1.847E + 02 | 3.736 |
| 75 | 2 | 2.432E + 02 | 2.995E + 02 | 18.798 | 4 | 2.409E + 02 | 2.993E + 02 | 19.512 | 6 | 2.409E + 02 | 2.991E + 02 | 19.458 |
| 90 | 2 | 2.799E + 02 | 3.629E + 02 | 22.871 | 4 | 2.799E + 02 | 3.630E + 02 | 22.893 | 6 | 2.804E + 02 | 3.629E + 02 | 22.734 |
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