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Title: Improved scaling laws for the shock-induced dispersal of a dense particle curtain

Abstract

Here, experiments were performed within Sandia National Labs’ Multiphase Shock Tube to measure and quantify the shock-induced dispersal of a shock/dense particle curtain interaction. Following interaction with a planar travelling shock wave, schlieren imaging at 75 kHz was used to track the upstream and downstream edges of the curtain. Data were obtained for two particle diameter ranges ($$d_{p}=106{-}125$$,$$300{-}355~\unicode[STIX]{x03BC}\text{m}$$) across Mach numbers ranging from 1.24 to 2.02. Using these data, along with data compiled from the literature, the dispersion of a dense curtain was studied for multiple Mach numbers (1.2–2.6), particle sizes ($$100{-}1000~\unicode[STIX]{x03BC}\text{m}$$) and volume fractions (9–32 %). Data were non-dimensionalized according to two different scaling methods found within the literature, with time scales defined based on either particle propagation time or pressure ratio across a reflected shock. The data refelct that spreading of the particle curtain is a function of the volume fraction, with the effectiveness of each time scale based on the proximity of a given curtain’s volume fraction to the dilute mixture regime. It is observed that volume fraction corrections applied to a traditional particle propagation time scale result in the best collapse of the data between the two time scales tested here. In addition, a constant-thickness regime has been identified, which has not been noted within previous literature.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2];  [2];  [3]
  1. Rutgers Univ., Piscataway, NJ (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. North Carolina State Univ., Raleigh, NC (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1575276
Report Number(s):
SAND-2018-11568J
Journal ID: ISSN 0022-1120; 672096
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Fluid Mechanics
Additional Journal Information:
Journal Volume: 876; Journal ID: ISSN 0022-1120
Publisher:
Cambridge University Press
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

DeMauro, Edward P., Wagner, Justin L., DeChant, Lawrence J., Beresh, Steven J., and Turpin, Aaron M. Improved scaling laws for the shock-induced dispersal of a dense particle curtain. United States: N. p., 2019. Web. doi:10.1017/jfm.2019.550.
DeMauro, Edward P., Wagner, Justin L., DeChant, Lawrence J., Beresh, Steven J., & Turpin, Aaron M. Improved scaling laws for the shock-induced dispersal of a dense particle curtain. United States. doi:10.1017/jfm.2019.550.
DeMauro, Edward P., Wagner, Justin L., DeChant, Lawrence J., Beresh, Steven J., and Turpin, Aaron M. Thu . "Improved scaling laws for the shock-induced dispersal of a dense particle curtain". United States. doi:10.1017/jfm.2019.550.
@article{osti_1575276,
title = {Improved scaling laws for the shock-induced dispersal of a dense particle curtain},
author = {DeMauro, Edward P. and Wagner, Justin L. and DeChant, Lawrence J. and Beresh, Steven J. and Turpin, Aaron M.},
abstractNote = {Here, experiments were performed within Sandia National Labs’ Multiphase Shock Tube to measure and quantify the shock-induced dispersal of a shock/dense particle curtain interaction. Following interaction with a planar travelling shock wave, schlieren imaging at 75 kHz was used to track the upstream and downstream edges of the curtain. Data were obtained for two particle diameter ranges ($d_{p}=106{-}125$,$300{-}355~\unicode[STIX]{x03BC}\text{m}$) across Mach numbers ranging from 1.24 to 2.02. Using these data, along with data compiled from the literature, the dispersion of a dense curtain was studied for multiple Mach numbers (1.2–2.6), particle sizes ($100{-}1000~\unicode[STIX]{x03BC}\text{m}$) and volume fractions (9–32 %). Data were non-dimensionalized according to two different scaling methods found within the literature, with time scales defined based on either particle propagation time or pressure ratio across a reflected shock. The data refelct that spreading of the particle curtain is a function of the volume fraction, with the effectiveness of each time scale based on the proximity of a given curtain’s volume fraction to the dilute mixture regime. It is observed that volume fraction corrections applied to a traditional particle propagation time scale result in the best collapse of the data between the two time scales tested here. In addition, a constant-thickness regime has been identified, which has not been noted within previous literature.},
doi = {10.1017/jfm.2019.550},
journal = {Journal of Fluid Mechanics},
number = ,
volume = 876,
place = {United States},
year = {2019},
month = {10}
}

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