Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Investigation of sand ridges in a laboratory channel flow
Conclusions The generation of sand ridges on an even sand bottom in a certain interval of the flow velocities occurs due to the effect of stationary waves on the bottom of the flow.The ridges occurring serve as the source of a new structure of the stationary waves generating new sand ridges, and the spectrum of the waves and ridges becomes multimodal.Reconstruction of the stationary waves and sand ridges continues until a stable structure is established, the time of establishment of such a structure coinciding with the end of the formation of the channel.The length of the stationary waves coincides with the length of the sand ridges, the picture of the sand surface represents a mirror image of the water surface: for all wavelengths the troughs of the ridges correspond to the crests of the waves.The height of the sand ridge for a given depth of the flow is uniquely determined by the height of the stationary waves.
Investigation of sand ridges in a laboratory channel flow
Conclusions The generation of sand ridges on an even sand bottom in a certain interval of the flow velocities occurs due to the effect of stationary waves on the bottom of the flow.The ridges occurring serve as the source of a new structure of the stationary waves generating new sand ridges, and the spectrum of the waves and ridges becomes multimodal.Reconstruction of the stationary waves and sand ridges continues until a stable structure is established, the time of establishment of such a structure coinciding with the end of the formation of the channel.The length of the stationary waves coincides with the length of the sand ridges, the picture of the sand surface represents a mirror image of the water surface: for all wavelengths the troughs of the ridges correspond to the crests of the waves.The height of the sand ridge for a given depth of the flow is uniquely determined by the height of the stationary waves.
Investigation of sand ridges in a laboratory channel flow
Mel'nikova, O. N. (Autor:in) / Shevchenko, O. B. (Autor:in) / Emel'yanov, A. V. (Autor:in)
1986
Aufsatz (Zeitschrift)
Englisch
BKL:
56.30
Wasserbau
Lokalklassifikation TIB:
770/6550/8000
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