Experimental study of free-surface flow instability and bedforms in shallow flows.
Sedimentary Geology
By: I. Karcz and D. Kersey
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Abstract
To test erosion and development of bed sculpture in unstable, pulsating shallow flow, 3 series of experiments were performed in a 10-m flume with flows of Reynolds Number up to 103, Froude Number up to 3.0, and slope up to 2%. In the first, the bed was rigid, in the second and third series planar beds were made from well-sorted and poorly sorted sand, respectively. Development of flow surface instability above the rigid bed showed the following stages: smooth surface; small wavelets; well-developed waves; and rough flow. The second series showed the following sequence: smooth bed; flow-aligned ridge and trough pattern; combined ridge and rhomboid pattern; and rhomboid configuration. The third series demonstrated transverse segregation of the bed material across the ridges.- from Authors
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Experimental study of free-surface flow instability and bedforms in shallow flows. |
| Series title | Sedimentary Geology |
| DOI | 10.1016/0037-0738(80)90016-0 |
| Volume | 27 |
| Issue | 4 |
| Year Published | 1980 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Sedimentary Geology |
| First page | 263 |
| Last page | 300 |