This thesis focuses on the simulation of water flow around a cylindrical bridge pier using the opensource software Dual SPHysics, based on the smoothed particle hydrodynamics (SPH) method. The aim of the thesis is to test different simulation parameters and determine their effect on drag coefficient. The obtained results are compared with Eurocode recommendations and experimental data from literature. A standardized closed-channel model with a pier was created fort he simulation, on which over 250 simulation variants were performed, keeping the geometry constant while varying the simulation parameters. The thesis presents the results and findings on how different parameters influence the final drag coefficient graph in relation to Reynolds number. The SPH method itself is also introduced, including its key equations and the XML code used in the simulations.
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