A lattice Boltzmann method for simulation of multi-species shock accelerated flows
| Autor: | G. N. Sashi Kumar, N. K. Maheshwari |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Predictor–corrector method
Physics Mechanical Engineering Computational Mechanics Lattice Boltzmann methods Energy Engineering and Power Technology Aerospace Engineering Mechanics Solver Dissipation Condensed Matter Physics 01 natural sciences Instability 010305 fluids & plasmas Shock (mechanics) Physics::Fluid Dynamics Moment (mathematics) Discontinuity (linguistics) Mechanics of Materials 0103 physical sciences 010306 general physics |
| Zdroj: | International Journal of Computational Fluid Dynamics. 32:19-34 |
| ISSN: | 1029-0257 1061-8562 |
| DOI: | 10.1080/10618562.2018.1456654 |
| Popis: | A numerical scheme for simulating multi-species shock accelerated flows using lattice Boltzmann approach has been proposed. It uses the moment conservation approach of Yang, Shu, and Wu and extends it to multi-species fluid problems. The multi-species method of Wang et al. has been modified by use of a predictor–corrector approach. This has helped in preventing the pressure oscillations while handling multi-species. Simulation of 2D shock cylinder interaction with this solver has shown good agreement with the experimental data and could capture material discontinuity and unsteady shocks. The simulation of a single mode Richtmyer–Meshkov instability showed that the solver is able to capture the development of spike and bubble as per the experimental findings of Aure and Jacobs. The dissipation in the proposed scheme was further reduced by the use of fifth-order weighted essentially non-oscillatory (WENO). Validated with multiple problems, this method has been found to capture shock instability with... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|