TY - GEN
T1 - Numerical simulations of dam-break flows by lattice Boltzmann method
AU - Purbasari, Rohmi Julia
AU - Suryanto, Agus
AU - Anam, Syaiful
N1 - Publisher Copyright:
© 2018 Author(s).
PY - 2018/10/17
Y1 - 2018/10/17
N2 - The Lattice Boltzmann Method (LBM) is an alternative numerical method based on the kinetic theory that has gained its popularity due to its simplicity, easy implementation, and capability to solve problems with simple and complex geometry. Although LBM has been successfully applied to various hydrodynamical problems, there is little literature on applying the LBM to free surface problems. In this paper, the free surface lattice Boltzmann method is used to solve two-dimensional dam-break problems. A typical volume-of-fluid method is incorporated into the LBM to track the movement of the free surface. The fluxes between cells are calculated by their mass exchange, i.e., by considering their distribution functions. To take into account the turbulence of the flow and to ensure the stability of the model, the Smagorinsky sub-grid model is incorporated into the LBM. Three cases of dam-break flows are studied, namely, dam breaks over a dry bed, a wet bed, and a solid obstacle. Our numerical simulations are very much in line with the existing experimental measurements.
AB - The Lattice Boltzmann Method (LBM) is an alternative numerical method based on the kinetic theory that has gained its popularity due to its simplicity, easy implementation, and capability to solve problems with simple and complex geometry. Although LBM has been successfully applied to various hydrodynamical problems, there is little literature on applying the LBM to free surface problems. In this paper, the free surface lattice Boltzmann method is used to solve two-dimensional dam-break problems. A typical volume-of-fluid method is incorporated into the LBM to track the movement of the free surface. The fluxes between cells are calculated by their mass exchange, i.e., by considering their distribution functions. To take into account the turbulence of the flow and to ensure the stability of the model, the Smagorinsky sub-grid model is incorporated into the LBM. Three cases of dam-break flows are studied, namely, dam breaks over a dry bed, a wet bed, and a solid obstacle. Our numerical simulations are very much in line with the existing experimental measurements.
KW - Dam-break flow
KW - free surface
KW - Lattice Boltzmann method
KW - numerical method
UR - https://www.scopus.com/pages/publications/85056202676
U2 - 10.1063/1.5062791
DO - 10.1063/1.5062791
M3 - Conference contribution
AN - SCOPUS:85056202676
T3 - AIP Conference Proceedings
BT - 8th Annual Basic Science International Conference
A2 - Karim, Corina
A2 - Azrianingsih, Rodliyati
A2 - Pamungkas, Mauludi Ariesto
A2 - Jatmiko, Yoga Dwi
A2 - Safitri, Anna
PB - American Institute of Physics Inc.
T2 - 8th Annual Basic Science International Conference: Coverage of Basic Sciences toward the World's Sustainability Challanges, BaSIC 2018
Y2 - 6 March 2018 through 7 March 2018
ER -