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Title: Benchmarking of Improved DPAC Transient Deflagration Analysis Code

The deflagration pressure analysis code (DPAC) has been upgraded for use in modeling hydrogen deflagration transients. The upgraded code is benchmarked using data from vented hydrogen deflagration tests conducted at the HYDRO-SC Test Facility at the University of Pisa. DPAC originally was written to calculate peak pressures for deflagrations in radioactive waste storage tanks and process facilities at the Savannah River Site. Upgrades include the addition of a laminar flame speed correlation for hydrogen deflagrations and a mechanistic model for turbulent flame propagation, incorporation of inertial effects during venting, and inclusion of the effect of water vapor condensation on vessel walls. In addition, DPAC has been coupled with chemical equilibrium with applications (CEA), a NASA combustion chemistry code. The deflagration tests are modeled as end-to-end deflagrations. As a result, the improved DPAC code successfully predicts both the peak pressures during the deflagration tests and the times at which the pressure peaks.
Authors:
 [1] ;  [2]
  1. Savannah River National Lab., Aiken, SC (United States)
  2. Savannah River Nuclear Solutions, Aiken, SC (United States)
Publication Date:
Report Number(s):
SRNL-STI-2016-00703
Journal ID: ISSN 0094-9930
Grant/Contract Number:
AC09-08SR22470
Type:
Accepted Manuscript
Journal Name:
Journal of Pressure Vessel Technology
Additional Journal Information:
Journal Volume: 139; Journal Issue: 6; Journal ID: ISSN 0094-9930
Publisher:
ASME
Research Org:
Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; Pressure; Combustion; Explosions; Transients (Dynamics); Flames; Vessels; Turbulence; Vents
OSTI Identifier:
1419839

Laurinat, James E., and Hensel, Steve J.. Benchmarking of Improved DPAC Transient Deflagration Analysis Code. United States: N. p., Web. doi:10.1115/1.4037635.
Laurinat, James E., & Hensel, Steve J.. Benchmarking of Improved DPAC Transient Deflagration Analysis Code. United States. doi:10.1115/1.4037635.
Laurinat, James E., and Hensel, Steve J.. 2017. "Benchmarking of Improved DPAC Transient Deflagration Analysis Code". United States. doi:10.1115/1.4037635. https://www.osti.gov/servlets/purl/1419839.
@article{osti_1419839,
title = {Benchmarking of Improved DPAC Transient Deflagration Analysis Code},
author = {Laurinat, James E. and Hensel, Steve J.},
abstractNote = {The deflagration pressure analysis code (DPAC) has been upgraded for use in modeling hydrogen deflagration transients. The upgraded code is benchmarked using data from vented hydrogen deflagration tests conducted at the HYDRO-SC Test Facility at the University of Pisa. DPAC originally was written to calculate peak pressures for deflagrations in radioactive waste storage tanks and process facilities at the Savannah River Site. Upgrades include the addition of a laminar flame speed correlation for hydrogen deflagrations and a mechanistic model for turbulent flame propagation, incorporation of inertial effects during venting, and inclusion of the effect of water vapor condensation on vessel walls. In addition, DPAC has been coupled with chemical equilibrium with applications (CEA), a NASA combustion chemistry code. The deflagration tests are modeled as end-to-end deflagrations. As a result, the improved DPAC code successfully predicts both the peak pressures during the deflagration tests and the times at which the pressure peaks.},
doi = {10.1115/1.4037635},
journal = {Journal of Pressure Vessel Technology},
number = 6,
volume = 139,
place = {United States},
year = {2017},
month = {9}
}