Field experience and experimental and theoretical studies have resulted in improved understanding of the functioning of vanes and an improved design basis. This paper presents a summary of the most significant improvements. A theory is presented that develops the raltionship between vane characteristics and induced bed shear stresses. This relatioship is then incorporated into the governing flow equations, which are solved to obtain flow and depth distributions in the channel. It is shown that small submerged vanes can produce significant changes in the distributions of velocity and depth in river channels. By introducing relatively small changes in the bed shear stresses, arrays of vanes can generate local changes in the bed elevation of the order of the vane height. The major controlling parameters are vane height, vane aspect ratio and angle, vane density (spacing), channel resistance, and sediment Froude number.

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  • Accession Number: 00605102
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 31 1991 12:00AM