The State of Art of Physical Modelling of Sediment Transportby Hans-J. Vollmers, Univ of the Armed Forces Munich, Germany,
Abstract: The paper attempts formula some ideas about the state of the art in the field of physical modelling of sediment transport processes. Up to now the physics of sediment transport are not known well enough to formulate a general equation. Besides obvious and indispensible actual measurements in nature often model investigations are the only help in solving practical tasks. It is true that mathematical models are free of scale problems; sometimes, however, they suffer from a lack of knowledge of the natural process as well as from the absence of an appropriate transport equation. Physical models have the difficulty of transferring values from nature to model and vice versa and have to be distorted, if they do not happen to be in the rough area according to SHIELDS. The unlimited interaction between transporting and transported material is advantageous. The operation of models and the interpretation of calculatory and measuring results take quite a bit of experience.
Subject Headings: Physical models | Sediment transport | Mathematical models | Hydrologic models | Mathematics | Scale models | Water flow
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