Wyniki wyszukiwania - BazTech

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Alternative study for the Nautical and Shore Protection Structures in the Estuary of Santos, Brazil

Alfredini P., Arasaki E., Bernardino J.C.M, Da Silva G.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2018

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Vol. 12, no. 2

375--380

EN

For the enlargement of the nautical dimensions of Santos Port Outer Access Channel (Brazil), training walls crossing the Offshore Bar are needed. The training walls choice to reduce dredging rates also induces to consider a coupling planning between nautical purposes and shore protection measures, as Santos Municipality have serious erosion problems nowadays due to the urban growth in the backshore and sea level rise. For decision support, the Hydraulic Laboratory of Engineering School of University of Sao Paulo was commissioned to study in a composite mathematical and scale model. Results include changes in wave height and direction and current speed analysis to conditions with training walls and segmented breakwaters. The water renewal was also analyzed to the condition with segmented breakwater and compared to current situation, based on hydrodynamics results and considering that this structure can reduce water quality in this area.

2

Inﬂuence of the outlet system parameters of a horizontal bulb pump unit on its performance characteristics

Artsiamchuk S. V., Sidorenko G. I.

Transactions of the Institute of Fluid-Flow Machinery

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2018

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nr 139

45--61

EN

Results of an extensive experimental study conducted in eighties at the former Leningrad Polytechnic Institute are revised and analysed in context of some further research. The optimum length of straight outlet tubes with diﬀuser of circular cross-section and the outlet/inlet crosssectional area ratio are established. The optimum geometrical features of cranked type outlet tubes and the outlet tubes with diﬀuser cross-section transition from circular to square and rectangular ones are determined. Finally, the inﬂuence of the outlet conjunction channel slope on the pumping station eﬃciency is studied in detail.

3

Symulator liniowego napędu hydrostatycznego w laboratorium hydraulicznym

Cichoń P., Stosiak M.

Napędy i Sterowanie

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2011

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R. 13, nr 11

112-117

PL

W artykule przedstawiono symulator liniowego napędu hydrostatycznego, będącego na wyposażeniu Laboratorium Napędów i Sterowań Hydraulicznych Instytutu Konstrukcji i Eksploatacji Maszyn Politechniki Wrocławskiej. Zwrócono uwagę na niektóre jego możliwości aplikacyjne oraz dokonano jego identyfikacji jako źródła hałasu. Jako przykład aplikacji wskazano generator drgań mechanicznych oraz układ regulacji położenia stołu symulatora.

EN

In the paper the simulator of linear hydrostatic drive was presented. Considered simulator is a part of Laboratory of Hydraulic Drive and Control of Institute of Machines Design and Operation Wroclaw University of Technology. Special attention was focused on some its application possibilities; moreover the simulator was identified as a source of noise. As an example of application the generator of mechanical vibrations and position regulation system were presented.