Iverson Italo Siebert, Michael Mannich, T. Bleninger
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引用次数: 0
Abstract
An application of a large-scale PIV technique on a scaled hydraulic model of a hydroelectric powerplant was performed. A detailed study regarding the relationship between the tracer size (paper confetti) and the spatial resolution settings of the statistical correlation program was carried out. The validated parameters and operational procedures were used for the flow characterization in two areas: the spillway approaching area and the tailrace channel. The larger tracer (10 mm diameter) performed better. The manual particle seeding showed to produce negative bias effects in velocity measurements, due to particle agglomeration. The low-cost measurements resulted in velocity field information of a resurgence flow in the tailrace channel measured with only 10 pairs of images. The study showed, as a proof of concept, that hydraulic model studies could easily be complemented with LS-PIV techniques providing spatial and temporal variations of velocity fields for flow analysis with advantages against intrusive point-based measurement techniques.
期刊介绍:
JAWER’s paradigm-changing (online only) articles provide directly applicable solutions to water engineering problems within the whole hydrosphere (rivers, lakes groundwater, estuaries, coastal and marine waters) covering areas such as: integrated water resources management and catchment hydraulics hydraulic machinery and structures hydraulics applied to water supply, treatment and drainage systems (including outfalls) water quality, security and governance in an engineering context environmental monitoring maritime hydraulics ecohydraulics flood risk modelling and management water related hazards desalination and re-use.