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Scale Effects in Swirling Flow
This paper presents the results of a study of vortex behavior in open-channel hydraulic models. The effects of model scale on steady well-developed vortices were investigated experimentally by comparing the behavior of three sizes of geometrically similar models. The models had sharp-edged circular orifices with diameters of 2 in., 4 in., and 6 in., respectively. Similarity of swirl production, discharges and air cores was considered. A general dissimilarity was found between the swirls produced in the smallest model and those in the two larger models. Also a local scale effect was detected in the region of the air core; the swirl reduction in this region was greatest in the smallest model. A theoretical explanation is given for the local scale effect. The behavior of the two larger models was similar.
Scale Effects in Swirling Flow
This paper presents the results of a study of vortex behavior in open-channel hydraulic models. The effects of model scale on steady well-developed vortices were investigated experimentally by comparing the behavior of three sizes of geometrically similar models. The models had sharp-edged circular orifices with diameters of 2 in., 4 in., and 6 in., respectively. Similarity of swirl production, discharges and air cores was considered. A general dissimilarity was found between the swirls produced in the smallest model and those in the two larger models. Also a local scale effect was detected in the region of the air core; the swirl reduction in this region was greatest in the smallest model. A theoretical explanation is given for the local scale effect. The behavior of the two larger models was similar.
Scale Effects in Swirling Flow
McCorquodale, John A. (author)
Journal of the Hydraulics Division ; 94 ; 285-302
2021-01-01
181968-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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