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1

Selected results of numerical investigation of Wloclawek reservoir sedimentation

100%
Banasik K., Skibinski J.
Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Melioracja
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1988
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nr 31
2

A numerical investigation of nutrient concentrations in Gdansk Gulf as revealed by a coupled one-dimensional model

75%
Dzierzbicka-Glowacka L.
Polish Journal of Environmental Studies
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2006
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tom 15
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nr 1
A dynamics model for nutrients was coupled with a one-dimensional physical and biological upper layer model to simulate the temporal changes not only in distributions of a nutrient but then of phytoplankton and zooplankton and study the role of these biological characteristics in the dynamics of the Gdańsk Gulf ecosystem. The 1D model consists of three submodels: a meteorological submodel for the physics of the upper layer and a biological submodel, which also is driven by output from the physical submodel. The biological upper layer model {nutrient-phytoplankton-zooplankton-detritus} incorporates formulations of the primary production mechanism and of the remineralization mechanisms within the mixed layer, in the lower layers and at the bottom as well as of the daily migration of zooplankton mechanism. The model is based on total inorganic nitrogen (NO3+NO2+NH4) and phosphate (PO4). The calculations were made for 180 days (from March to August) for two stations at Gdańsk Gulf (at station A, near the Vistula river mouth, and at station B, located further to the open sea). The results of the numerical investigations described here were compared with the mean observed values of characteristics investigated for 10 years, 1990-2000. Comparison of computed and measured values shows the model reproduces the time-vertical structure of characteristics investigated in accordance with the in situ observations. The numerical simulations shown that the differences between the simulated and mean observed values of nutrient in the upper layer are c. 1 mmol m⁻³ for total inorganic nitrogen and 0.1 mmol m-3 for phosphate. The slight differences between the calculated and observed values of surface chlorophyll-a and microzooplankton biomass are ca. 5-20%, depending on the location of the hydrographic station and the month for which the calculations were made. The model can be used to describe the temporal patterns for nutrients distributions and phytoplankton and zooplankton biomass.
3

Numerical investigation of action potential transmission in plants

75%
Pietruszka M., Pazurkiewicz-Kocot K.
Acta Societatis Botanicorum Poloniae
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2000
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tom 69
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nr 3
4

Investigation of the forced torsional vibrations in the saw unit of a kind of circular saws. Part II: numerical investigations

63%
Vukov G., Gochev Z., Slavov V., Wieloch G.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2013
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tom 81
5
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Experimental and numerical investigation of non-submerged flow under a sluice gate

63%
Kiczko A., Kubrak J., Kubrak E.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
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2015
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tom 47
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nr 3
The problem of sluice gate flow is analyzed using two models: a simplified one, derived according to the concept of the Potential Field (PF), and a more complex form, based on the Reynolds Average Navier-Stokes (RANS) equations. The numerical solution is compared with experimental data, including measurements performed by authors and results acquired from literature. Despite its simplicity, the PF model provides a satisfactory agreement with the measurements. The slightly worse performance of the RANS model comes from an overestimation of energy losses.
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