A High Resolution Simulation of a Single Shock-Accelerated Particle Academic Article uri icon

abstract

  • Abstract 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.

published proceedings

  • Journal of Fluids Engineering

author list (cited authors)

  • Maxon, W. C., Nielsen, T., Denissen, N., Regele, J. D., & McFarland, J.

citation count

  • 1

complete list of authors

  • Maxon, W Curtis||Nielsen, Tanner||Denissen, Nicholas||Regele, Jonathan D||McFarland, Jacob

publication date

  • July 2021