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:

DeMauro, Edward P.  ^[1];

• Search DOE PAGES for author "DeMauro, Edward P."
• Search DOE PAGES for ORCID "0000-0002-3793-8014"
• Search orcid.org for ORCID "0000-0002-3793-8014"

Wagner, Justin L.  ^[2];

• Search DOE PAGES for author "Wagner, Justin L."
• Search DOE PAGES for ORCID "0000-0003-2017-4326"
• Search orcid.org for ORCID "0000-0003-2017-4326"

DeChant, Lawrence J. ^[2]; Beresh, Steven J. ^[2]; Turpin, Aaron M. ^[3]

---

+ Show Author Affiliations

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:

2019-10-10

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