Impact of a Thermocline on Water Dynamics in Reservoirs – Dobczyce Reservoir Case

• Autorzy: Hachaj P. S. , Szlapa M.

Identyfikatory

DOI

10.1515/meceng-2017-0012

• Języki publikacji: EN

Abstrakty

EN

While modeling water dynamics in dam reservoirs, it is usually assumed that the flow involves the whole water body. It is true for shallow reservoirs (up to several meters of depth) but may be false for deeper ones. The possible presence of a thermocline creates an inactive bottom layer that does not move, causing all the discharge to be carried by the upper strata. This study compares the results of hydrodydynamic simulations performed for the whole reservoir to the ones carried out for the upper strata only. The validity of a non-stratified flow approximation is then discussed.

Słowa kluczowe

EN

storage reservoir; water dynamics; numerical simulation; thermocline; stratification

PL

zbiornik retencyjny; dynamika wody; symulacja numeryczna; termoklina; uwarstwienie

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. LXIV, nr 2
• Strony: 189--203
• Opis fizyczny: Bibliogr. 14 poz., fot., rys.

Twórcy

autor

Hachaj P. S.

• Institute of Water Engineering and Water Management, Cracow University of Technology, ul. Warszawska 24; 31-155 Krakow, Poland

autor

Szlapa M.

• Institute of Water Engineering and Water Management, Cracow University of Technology, ul. Warszawska 24; 31-155 Krakow, Poland

Bibliografia

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• [2] J. Starmach and G. Mazurkiewicz-Boron (Eds). Dobczyce Reservoir Ecology-Eutrophication-Protection. Dept. of Freshwater Biology, Institute of Nature Conservation, Polish Academy of Sciences, Cracow, Poland, 2000. (in Polish).
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• [4] P. Hachaj, L. Lewicki, E. Nachlik and T. Siuta. Effectiveness of hydrodynamic models in assessment of dammed reservoir dynamics. Gospodarka Wodna, 8:286-288, 2014. (in Polish).
• [5] P. Hachaj. Modelling of a two-dimensional velocity field for the water flow in the lake of Dobczyce. In P.M. Rowinski, editor, Transport Phenomena in Hydraulics, Publications of the Institute of Geophysics, Polish Academy of Sciences. E – Hydrology (formerly Water Resources), E-7(401):87-95, 2007.
• [6] M. Gałek. Sensitivity analysis of the FESWMS model applied to the Dobczyce Reservoir. M.Sc. Thesis. Cracow University of Technology, Poland, 2010. (in Polish).
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• [9] M. Gałek and P. Hachaj. Application of the RMA2/RMA4 models to simulate pollution transport in a retention reservoir. In P. Rowinski, editor, Experimental and Computational Solutions of Hydraulic Problems. GeoPlanet: Earth and Planetary Science, pages 301-313, Springer, 2013. doi: 10.1007/978-3-642-30209-1_21.
• [10] P. Hachaj and M.Tutro. Flow patterns for dryling and wetting of a retention reservoir bed – numerical modeling. Infrastructure and Ecology of Rural Areas, IV(3):1407-1419, 2014. doi:10.14597/infraeco.2014.4.3.106.
• [11] P. S. Hachaj, M. Szlapa and M. Tutro. Numerical modeling of sub-glacial flow in a retention reservoir. Technical Transactions; Environment Enginering, 1-S(18):37-51, Cracow University of Technology, 2015. doi: 10.4467/2353737XCT.15.182.4387.
• [12] A. Bojarski, Z. Gręplowska and E. Nachlik. Goczałkowice Reservoir. Cause and effect DPSIR analysis of processes and important phenomena from the viewpoint of managing dam reservoir. Cracow University of Technology, Monograph No. 420. 2012. (in Polish).
• [13] K. Witek. Water flow simulations in the Tresna reservoir using the AdH numerical model. B.Eng. Thesis, Cracow University of Technology, Poland, 2013. (in Polish).
• [14] A. Saggio and J. Imberger. Mixing and turbulent fluxes in the metalimnion of stratified lake. Limnology and Oceanography, 46(2):392-409, 2001.

Uwagi

EN

Sources of photographs: http://www.mpwik.krakow.pl/