A143 斜水路を用いた河川再生工法に関する基礎的研究(A-14 環境流体(4),一般講演)

概要

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Relationship between the upstream flow depth and downstream one of a hydraulic jump with and without abrupt rise is derived from the continuity equation and momentum equation. On the other hand, such theoretical equations cannot give some information on the streamwise length of the hydraulic jump. In this study, the length of the hydraulic jump with abrupt rise was measured with changing both of the inlet Froude number and the ratio between the inlet flow depth and the height of abrupt rise by making use of a point gauge. The velocity measurements in and around the hydraulic jump were also conducted with two sets of two-components electromagnetic current meters. It was found that the length of the hydraulic jump with abrupt rise is affected both of the inlet Froude number and the ratio between the inlet flow depth and the height of abrupt rise. As a result, a new formula about the length of the hydraulic jump with abrupt rise is suggested.
日本流体力学会の論文
2004-08-09