2024 Volume 80 Issue 17 Article ID: 24-17126
Wind-blown sand is a problem on sandy beaches, but there have been few studies on the effect of waves on blown sand on beaches. In this study, experiments were conducted to simulate the sandy beach on the west coast of Niigata, and the purpose was to improve the accuracy of the calculation of the amount of wind-blown sand by numerical calculation on the sandy beach and to establish a calculation method. In the study of only the air, similar results to previous studies were obtained in both experiments and numerical analysis. On the other hand, the amount of wind-blown sand was underestimated in comparison with field data. Therefore, in order to take the gas-liquid phase into account, we conducted an experiment and numerical analysis in which wave generation was performed in addition to the air blow. In the experiment, it was confirmed that the amount of sand dispersed increased compared to the case where only the air was taken into account, suggesting that the accuracy of sand dispersal calculation is improved by taking waves into account. Further evaluation of the mechanism near the shoreline is needed to improve the accuracy of the numerical analysis.
