Abstract
Numerical simulation of casting filling process with complex shape is time-consuming. Compared with the traditional SOLA-VOF method, the lattice Boltzmann method (LBM) calculates the pressure field by particle distribution functions instead of the correction of the velocity and pressure fields, which greatly simplifies the calculation process. In addition, the LBM provides a flexible approach which can be easily parallelized. In this study, the LBM is employed to simulate casting filling process. An implementation of a volume-of-fluid (VOF) method within the lattice Boltzmann framework is proposed to capture the free surface of the casting filling process. A Smagorinsky large eddy simulation (LES) model is adopted to improve the numerical stability of the LBM. An adaptive time stepping technique is implemented to ensure an efficient and stable simulation. The model is validated by the experimental and simulation results of Campbell box filling process. The filling process of complex casting is simulated, and the result is compared with the filling process obtained by the SOLA-VOF method. The prediction accuracy and reliability of free surface profile is analysed.
Original language | English |
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Article number | 012061 |
Number of pages | 6 |
Journal | IOP Conference Series: Materials Science and Engineering |
Volume | 529 |
Issue number | 1 |
DOIs | |
Publication status | Published - 17 Jun 2019 |
Event | Joint 5th International Conference on Advances in Solidification Processes, ICASP 2019 and 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining, CSSCR 2019 - Salzburg, Austria Duration: 17 Jun 2019 → 21 Jun 2019 |
Keywords
- numerical simulation
- lattice Boltzmann method
- casting filling process
- volume of fluid method
- large eddy simulation