Search results for "Buckingham’s theorem"

showing 3 items of 3 documents

Experimental Study of Central Baffle Flume

2019

In this paper, the hydraulics of a central baffle flume (CBF) were experimentally studied. Extensive experimental runs were carried out to highlight the effects of different geometrical parameters such as baffle length, contraction ratio, and the length of upstream and downstream guide walls. Two different approaches, i.e., the Π theorem of dimensional analysis coupled with the incomplete self-similarity theory and the energy balance equation, were applied to deduce the stage–discharge formula of a CBF characterized by different geometrical parameters. The stage–discharge relationship deduced by the dimensional analysis approach was more accurate than that obtained by the energy approach. F…

Central baffle flumeHydraulicsOptimal design of CBFStage–discharge formula0207 environmental engineeringBaffle02 engineering and technology01 natural sciencesAgricultural and Biological Sciences (miscellaneous)Buckingham’s theoremlaw.invention010309 opticsFlumelaw0103 physical sciencesSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali020701 environmental engineeringIncomplete self-similarityGeologyWater Science and TechnologyCivil and Structural EngineeringMarine engineering
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Dimensional analysis and stage-discharge relationship for weirs: a review

2017

Deducing the weir flow stage-discharge relationship is a classical hydraulic problem. In this regard Buckingham’s theorem of dimensional analysis can be used to find simple and accurate formulas to obtain the rating curves of different weir types. At first, in this review paper the rectangular weir that is a very common hydraulic structure is studied. It is indicated that the crest shape, approach channel width, obliquity (angle between the weir crest and the direction normal to the flow motion) and vertical inclination (pivot weir) are the key-parameters affecting the flow over the rectangular weirs. The flow over the triangular, labyrinth, parabolic, circular, elliptical, and W-weirs are …

Engineering0208 environmental biotechnologyMotion (geometry)BioengineeringGeometry02 engineering and technologyChannel widthW-weirs Buckingham’s theoremIndustrial and Manufacturing EngineeringPhysics::Fluid Dynamicslcsh:Agricultureelliptical weirSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliGeotechnical engineeringDrainage networklcsh:Agriculture (General)parabolic weirbusiness.industryMechanical Engineeringcircular weirlcsh:SRectangular weirlcsh:S1-972020801 environmental engineeringlabyrinth weirincomplete self-similarity.Hydraulic structureFlow (mathematics)triangular weirWeirCrestStage (hydrology)Rectangular weir triangular weir labyrinth weir parabolic weir circular weir elliptical weir W-weirs Buckingham’s Theorem Incomplete self-similaritybusinessJournal of Agricultural Engineering
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Portable central baffle flume

2022

This paper investigated the hydraulic characteristics of the triangular central baffle (TCB) flume. Laboratory tests were carried out to determine the flume dimensions. The field applicability of the proposed portable device was examined by on-farm installation. According to the laboratory tests, when the contraction ratio, r, was less than 0.39, the flow capacity was not affected by the ratio between the flume’s floor height and the throat width. The laboratory analysis also showed that there was no significant effect of installing an entrance ramp on the stage-discharge relationship for r<0.39, while the entrance ramp increased the discharge capacity for r>0.39. The stage-discharge …

Triangular central baffle flumeMechanical Engineeringsubmergence threshold. n-coSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliBioengineeringincomplete self-similaritystage-discharge formulaIndustrial and Manufacturing EngineeringBuckingham’s theorem
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