Martin Šrámek, Tomáš Kuchovský


Experiment simulating the storage of spent nuclear fuel in the canister filled by bentonite mixture took place in the Center of experimental Geotechnics (CEG) on the Faculty of Civil engineering of the Czech Technical University in Prague during the years 2002–2006. After the realisation of the experiment it was shown, that both non-homogeneous geochemical and temperature fields were established. The main aim of the work was focused on the evaluation of the fluid flow characteristics inside the container, especially on the direction and flow velocities influenced by the increased temperature. Numerical modelling using the SHEMAT computer code was used to simulate the fluid flow.
Mathematical modelling confirmed the probable formation of the convection cells along the heater with variable velocities depending on the hydraulic and thermal properties of the bentonite mixture and on the physical properties of the saturating fuid. The generated flow field could be the driving force for the geochemical non-homogeneities.

Bibliografická citace

Šrámek, M., & Kuchovský, T. (2016). MODELOVÁ CIRKULACE FLUID V EXPERIMENTÁLNÍ NÁDOBĚ MOCK-UP-CZ. Geologické výzkumy na Moravě a ve Slezsku, 22(1-2), 75-79.  doi:

Klíčová slova

Mock-Up-CZ; numerical model; SHEMAT; convection cell

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Bartels, J. – Clauser, C. – Kühn, M. (2003): SHEMAT – Simulator for Heat and Mass Transport (verze 7.1) [počítačový program]. – Springer Verlag, Heidelberg-Berlin.

Blomberg, T. (2001): HEAT3 – Three-dimensional heat transfer (manuálk verzi 4.0) [počítačový program] – Blocon Sweden (, Nordmannavagen 96, SE-224 75 Lund, Sweden.

Bartels, J. – Clauser, C. – Kühn, M. (2003): Numerical Simulation of Reactive Flow using SHEMAT. – In: Clauser C. (ed.), Numerical Simulation of Reactive Flow in Hot Aquifers – SHEMAT/Processing SHEMAT, Springer Verlag, Heidelberg-Berlin, 5–74 .

Clauser, C. (1999): Thermal Signatures of Heat Transfer processes in the Earth’s Crust (Lecture Notes in Earth Science), 85. – Springer Verlag, Heidelberg-Berlin, 111 str.

Karnland, O. – Olsson, S. – Dueck, A. – Birgersson, M. – Nilsson, U. – Hernan-Hakansson, T. – Pedersen, K. – Nilsson, S. – Eriksen, T-E. – Rosborg, B. (2009): Long-term test of buffer material at the ÄspöHard Rock Laboratory, LOT project. – Final report on the A2 test parcel. SKB TR-09-29, SvenskKärnbränslehantering AB.

Kostoglou, M. – Evgenidis, S. P. – Karapantsios, T. D. (2013): Unexpected natural convection heat transfer for small Rayleigh numbers in external geometry. – International Journal of Heat and Mass Transfer, 64, 773–782. Amsterdam.

Pacovský, J. – Svoboda, J. – Zapletal, L. (2007): Saturation development in the bentonite barrier of the Mock–Up–CZ geotechnical experiment. – Physics and Chemistry of the Earth, 32 (8–14): 767–779.

Přikryl, R. – Weishauptová, Z. (2010): Hierarchical porosity of bentonite-based buffer and its modification due to increased temperature and hydration. – Applied Clay Science, 47 (1–2): 163–170.

Push, R. – Pacovský, J. – Čechová, Z. (2007): Are all smectite clays suitable as “buffer“? – Physics and Chemistry of the Earth, část A/B/C 32 (1–7), 116–122.

Svoboda, J. – Vašíček, R. (2010): Preliminary geotechnical results from the Mock-Up-CZ ex-periment. – Applied Clay Science, 47(1–2): 139–146.