首页|SCOUR DEPTH AND FLOW PATTERN OF ERODING PLANE JETS

SCOUR DEPTH AND FLOW PATTERN OF ERODING PLANE JETS

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Local scour may occur when a hydraulic structure is positioned in a channel with an erodible bed.Herewith investigated experimentally are the erosion and flow pattern due to a water jet passing over a channel bed at the asymptotic (final) state. The development of the scour hole, its maximum scour depth and length, are recorded and compared with available scour-depth relations. Two sets of experiments (see Table 1) were carried out. Set 1 (3 runs) was concerned with measuring the vertical instantaneous velocity distribution in the scour hole. The scour hole at the asymptotic (final) state, t ≈100 [h] was investigated. Set 2 (5 runs) was concerned with studying the physics of scouring. The scour hole at about mid-state, t ≈ 0.5 [h], was investigated; subsequently the scour-hole depth was linearly extended on the semi-log scale to 72 [h]; no velocity measurements were performed. The present data are put in context with some (popular) existing relations; recommended is a modification of some of these relations.

Local scourEroding jetScour depthFlow pattern

A.KURNIAWAN、M.S.ALTINAKAR、W.H.GRAF

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Res. Assist., LRH, Ecole Polytechnique Fédérale, Lausanne, Switzerland

Res. Assoc., LRH, Ecole Polytechnique Fédérale, Lausanne, Switzerland, presently Prof., NCCHE, University of Mississippi, USA

Prof., LRH, Ecole Polytechnique Fédérale, Lausanne, Switzerland

2004

国际泥沙研究(英文版)
国际泥沙研究培训中心

国际泥沙研究(英文版)

影响因子：0.337
ISSN：1001-6279
年,卷(期)：2004.19(1)
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