A High Resolution Simulation of a Single Shock-Accelerated Particle
| Autor: | Jonathan D. Regele, W. Curtis Maxon, Jacob McFarland, Nicholas Denissen, Tanner Nielsen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
020301 aerospace & aeronautics Mechanical Engineering Single shock Resolution (electron density) 02 engineering and technology Particulates 01 natural sciences 010305 fluids & plasmas Computational physics Physics::Fluid Dynamics 0203 mechanical engineering 0103 physical sciences Accelerated particle |
| Zdroj: | Journal of Fluids Engineering. 143 |
| ISSN: | 1528-901X 0098-2202 |
| DOI: | 10.1115/1.4050007 |
| Popis: | Particle drag models, which capture macroviscous and pressure effects, have been developed over the years for various flow regimes to enable cost effective simulations of particle-laden flows. The relatively recent derivation by Maxey and Riley has provided an exact equation of motion for spherical particles in a flow field based on the continuum assumption. Many models that have been simplified from these equations have provided reasonable approximations; however, the sensitivity of particle-laden flows to particle drag requires a very accurate model to simulate. To develop such a model, a two-dimensional axisymmetric Navier–Stokes direct numerical simulation of a single particle in a transient, shock-driven flow field was conducted using the hydrocode FLAG. FLAGs capability to run arbitrary Lagrangian-Eulerian hydrodynamics coupled with solid mechanic models makes it an ideal code to capture the physics of the flow field around and in the particle as it is shock-accelerated—a challenging regime to study. The goal of this work is twofold: to provide a validation for FLAGs Navier–Stokes and heat diffusion solutions and to provide a rationale for recent experimental particle drag measurements. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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