Simulation of Dam Break Flow Using Quasi-Molecular Modelling

Sitthichai KULSRI, Mullica JAROENSUTASINEE, Krisanadej JAROENSUTASINEE

Abstract


We developed a new method based on quasi-molecular modelling to simulate dam break flow. Each quasi-molecule was a group of particles that interacted in a fashion entirely analogous to classical Newtonian molecular interactions. The tank had a base length of 58.4 cm. A water column with a base length of 14.6 cm and a height of 29.2 cm was initially supported on the right side by a vertical plate drawn up rapidly at time t = 0.0 s. The water fell under the influence of gravity acting vertically downwards. The numerical results were validated by quantitative comparison with a previous study. The predicted height and leading edge of the water column corresponded very well with experimental measurements from a previous study. Therefore, our new method based on quasi-molecular modelling showed its ability to adequately simulate a free surface problem.


Keywords


Quasi-molecular modelling, particle modelling, molecular aggregate approach, dam break flow, dam collapsing

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