Proposed Similarity Law for Surface Velocity in Hydraulic Models
Publication: Journal of Hydraulic Engineering
Volume 118, Issue 9
Abstract
In this paper, a brief review is made to describe the situation and main problems of distorted hydraulic models. The concept is reaffirmed that the vertical distribution of velocity in a distorted hydraulic model is dissimilar to the prototype. For this reason, the measuring point of the vertical average velocity that is usually used cannot be directly employed. A similarity law for surface velocity is proposed, the factors affecting it are discussed theoretically, and the coefficients in the similarity scale are determined from field and laboratory data. An example of practical application is given. After using the proposed similarity law, the discrepancy of surface velocity of model to prototype decreased essentially. It is advantageous for hydraulic engineers using surface velocity to replace the vertical average value in physical models. It has been shown to be effective and satisfactory in our laboratory for hydraulic model studies with a large distortion. The similarity law proposed in this paper is considered to be used commonly.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 118 • Issue 9 • September 1992
Pages: 1318 - 1325
Copyright
Copyright © 1992 ASCE.
History
Published online: Sep 1, 1992
Published in print: Sep 1992
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