A particle resolved simulation approach for studying shock interactions with moving, colliding solid particles

• Published in: Computers & fluids 2022-11, Vol.248, p.105670, Article 105670
• Main Authors: Mehta, Y., Goetsch, R.J., Vasilyev, O.V., Regele, J.D.
• Format: Article
• Language: English
• Subjects: Characteristic based volume penalization; ENGINEERING; Immersed boundary; Multiphase-Flows; Particle resolved direct numerical simulations; Shock-particle; Shock-particle interaction
• ISSN: 0045-7930; 1879-0747
• DOI: 10.1016/j.compfluid.2022.105670

This work applies a new combination of techniques for the fully resolved simulation of compressible, gas–particle multiphase flows. The adaptive wavelet collocation method is used to dynamically, and efficiently, adapt the computational grid to localized flow features and the particles. A characteristic-based volume penalization method that imposes arbitrary Dirichlet, Neumann, or Robin-type immersed boundary conditions, is used to enforce the no-slip condition at particle surfaces. A hard-sphere collision model is applied to capture the particle–particle collisions. Proof of concept test cases are presented, showcasing the dynamic grid adaptation and fully resolved two-way coupling between the phases that is possible with this approach. Results for a shock-driven single cylinder under viscous and inviscid conditions are presented along with a demonstration of a shock interacting with a cloud of randomly distributed cylinders and spheres. •Parallel Adaptive Wavelet Collocation Method to simulate shock-particle interaction.•Hard-sphere collision model to resolve particle-particle and particle-wall collisions.•Numerical validation of motion of a cylinder under shock-wave loading.•A demonstration of moving, colliding spheres and shock-driven cylinders.