@Article{CiCP-23-4,
author = {},
title = {DNS Study of Initial-Stage Shock-Particle Curtain Interaction},
journal = {Communications in Computational Physics},
year = {2018},
volume = {23},
number = {4},
pages = {1202--1222},
abstract = {<p style="text-align: justify;">High speed particulate flow appears in many scientific and engineering
problems. Current work focuses on the situation with volume fraction of particles
between 0.001 and 0.5, in which both particle-fluid and particle-particle interactions
are important. Based on the stratified multi-phase flow model (Chang &amp; Liou, J. Comput.
Phys. 225 (2007), 840-873) with Euler equations, by regarding one phase as solid, a
numerical method is developed to conduct direct numerical simulations (DNS) to high
speed particulate flows. It is then applied to simulate the problem with a planar shock
wave impacting on a particle curtain, but focusing on the initial stage, in which the
particles can be regarded as static. 2-D simulations are conducted by keeping the total
volume fraction of particles and changing the number of particles. The convergence
of shock wave locations and turbulent energy are observed. A 1-D volume-averaged
model is also studied and compared with the DNS, which gives effective drag coefficients. A 3-D DNS is conducted to compare with the 2-D DNS and 1-D model, showing
that more detailed 3-D DNS studies are needed. The convergent values obtained from
current work can be applied to the study of very small particle cases and to the model
development.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.OA-2016-0256},
url = {https://global-sci.com/article/80050/dns-study-of-initial-stage-shock-particle-curtain-interaction}
}