WIND TUNNEL STUDY OF SAND TRANSPORT ON SURFACES COMPOSED OF BI-MODAL GRAIN-SIZE DISTRIBUTION

Souichi Harikai, Susumu Kubota, Shintaro Hotta

Abstract


The transports rates on a sandy bed that grain sizes were bi-modally distributed were experimented in a wind tunnel. The results showed that the transport rate followed a power law and the power was 2.5, and that the threshold shear velocities were the same or somewhat larger than those of the large diameter sand in the mixture.

Keywords


sand transport rate by wind; wind tunnel; bi-modal distribution

References


Bagnold, R. M. 1936. The movement of desert sand, Proc., Roy., Soc., London, A, 157, 596-620.http://dx.doi.org/10.1098/rspa.1936.0218

Bagnold, R. M. 1973. The physics of blown sand and desert dunes, Chapman & Hall Ltd., London, 265pp.

Chepil, W. S. 1945. Dynamics of wind erosion 3. The transport capacity of the wind, Soil Science, Vol. 60, 475-480.http://dx.doi.org/10.1097/00010694-194512000-00006

Horikawa, K., S. Hotta, and N. C. Kraus. 1986. Literature review of sand transport by wind on a dry sand surface, Coastal Engineering, 9, 503-526.http://dx.doi.org/10.1016/0378-3839(86)90001-3

Hotta, S., S. Kubota, N. Nakamura, and K. Hosaka. 2006. Wind-tunnel study of vertical distribution of sand transport rate by wind, Proceedings of 30th International Conference on Coastal Engineering, ASCE, 2604-2616.

Hotta, S., S. Kubota, and S. Harikai 2004. On wind-blown transport rate of fine sand, Proceedings of 29th International Conference on Coastal Engineering, ASCE, 2914-2926.


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