Laboratory studies into hydraulic coefficient in curved planform labyrinth weir and piano key weir
نویسندگان
چکیده
منابع مشابه
A laboratory investigation on the potential of computational intelligence approaches to estimate the discharge coefficient of piano key weir
The piano key weir (PKW) is a type of nonlinear control structure that can be used to increase unit discharge over linear overflow weir geometries, particularly when the weir footprint area is restricted To predict the outflow passing over a piano key weir, the discharge coefficient in the general equation of weir needs to be known. This paper presents the results of laboratory model testing of...
متن کاملOverview of Piano Key weir prototypes and scientific model investigations
The interest in Piano Key weirs (PKW) was increasing over the past years, both in terms of application and hydraulic research. Several systematic model test series were performed and published so far, originating from different hydraulic laboratories around the world. Therein, the key geometric parameters dominating the hydraulic capacity of PKWs were identified as developed crest length, trans...
متن کاملEstimation of A-type Piano Key weir rating curve
The Piano Key weir (PKW) is a hydraulically attractive alternative to linear overflow weirs, increasing the unit discharge for similar heads and spillway widths. This advantage allows operating dam reservoirs on an increased level and provides thereby an enhanced retention volume. It is a result of the non-linear nature of PKWs being folded back and forth to make repeating cycles or keys. As PK...
متن کاملNumerical study of flow of labyrinth weir with triangular and curved plan form using Fluent software
Labyrinth weirs have not a straight crest in the perpendicular direction to the flow. The plan view of the weir consists of multiple and broken linear crests that cause the increase of its effective length. The advantages of this type of weirs are higher discharge capacity, easy aeration as well as low fluctuations of water surface at the weir upstream. This paper deals with the simulation of t...
متن کاملNumerical Investigation of Geometric Parameters Effect of the Labyrinth Weir on the Discharge Coefficient
Weirs, as overflow structures, are extensively used for the measurement of flow, its diversion and control in the open canals. Labyrinth weir due to more effective length than conventional weirs, allows passing more discharge in narrow canals. Determination the design criteria for the practical application of these weirs need more investigation. Weir angle and its position relative to the flow ...
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ژورنال
عنوان ژورنال: Journal of the Croatian Association of Civil Engineers
سال: 2019
ISSN: 0350-2465,1333-9095
DOI: 10.14256/jce.1606.2016