BWEFoam: An open-source Boussinesq types of equations solver based on OpenFOAM
Fangrui Liu,
Huai Zhang,
Yaolin Shi
Affiliations
Fangrui Liu
Key Laboratory of Earth System Numerical Modeling and Application, Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Computational Geodynamics, Chinese Academy of Sciences, Beijing, 100049, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
Huai Zhang
Correspondence to: College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.; Key Laboratory of Earth System Numerical Modeling and Application, Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Computational Geodynamics, Chinese Academy of Sciences, Beijing, 100049, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
Yaolin Shi
Key Laboratory of Earth System Numerical Modeling and Application, Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Computational Geodynamics, Chinese Academy of Sciences, Beijing, 100049, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
Boussinesq-type wave models improve traditional shallow water models by incorporating higher-order terms that account for dispersion effects during wave propagation. Essentially, they are applicable when the wave number times water depth (kd) does not satisfy the shallow water condition (kd<<1). BWEFoam, introduced in this work, is implemented in the finite-volume-method based OpenFOAM framework. The high-order Boussinesq-type equations are employed as the governing equations to incorporate the effect of dispersion. The effects of bottom friction and momentum diffusion are also integrated as source terms. Validation against a dam break scenario confirms its accuracy compared to analytical solutions while its ability to capture dispersion effects is demonstrated in a solitary wave propagation simulation. BWEFoam broadens the scope of water wave simulations, offering improved relevance in realistic scenarios where the dispersion effect cannot be neglected.
