Rough-bed flows in geophysical, environmental, and engineering systems: Double-Averaging Approach and its applications

Rough-wall turbulent flows represent a ubiquitous feature of many natural systems and man-made structures and therefore they have attracted significant attention from mathematicians, physicists, engineers, and Earth scientists, who have extensively studied these flows for more than eighty years. However, in spite of a fairly long research history and significant progress made towards their description and understanding, accurate prediction and control of rough-wall flows are still unsolved problems and thus additional research efforts and new approaches are required. One of these approaches, the so-called Double-Averaging Methodology (DAM), is the topic of this Special Issue.

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