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Title: CAFE: A Computer Tool for Accurate Simulation of the Regulatory Pool Fire Environment for Type B Packages

Abstract

The Container Analysis Fire Environment computer code (CAFE) is intended to provide Type B package designers with an enhanced engulfing fire boundary condition when combined with the PATRAN/P-Thermal commercial code. Historically an engulfing fire boundary condition has been modeled as {sigma}T{sup 4} where {sigma} is the Stefan-Boltzman constant, and T is the fire temperature. The CAFE code includes the necessary chemistry, thermal radiation, and fluid mechanics to model an engulfing fire. Effects included are the local cooling of gases that form a protective boundary layer that reduces the incoming radiant heat flux to values lower than expected from a simple {sigma}T{sup 4} model. In addition, the effect of object shape on mixing that may increase the local fire temperature is included. Both high and low temperature regions that depend upon the local availability of oxygen are also calculated. Thus the competing effects that can both increase and decrease the local values of radiant heat flux are included in a reamer that is not predictable a-priori. The CAFE package consists of a group of computer subroutines that can be linked to workstation-based thermal analysis codes in order to predict package performance during regulatory and other accident fire scenarios.

Authors:
; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
4503
Report Number(s):
SAND99-0625C
TRN: US0101498
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 1999 ASME Pressure Vessel and Piping Conference, Boston, MA (US), 08/01/1999--08/05/1999; Other Information: PBD: 16 Mar 1999
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; C CODES; FLUID MECHANICS; HEAT FLUX; COMPUTERIZED SIMULATION; THERMAL ANALYSIS; THERMAL RADIATION; FIRES; CONTAINERS; ACCIDENTS; RESPONSE FUNCTIONS

Citation Formats

Gritzo, L A, Koski, J A, and Suo-Anttila, A J. CAFE: A Computer Tool for Accurate Simulation of the Regulatory Pool Fire Environment for Type B Packages. United States: N. p., 1999. Web.
Gritzo, L A, Koski, J A, & Suo-Anttila, A J. CAFE: A Computer Tool for Accurate Simulation of the Regulatory Pool Fire Environment for Type B Packages. United States.
Gritzo, L A, Koski, J A, and Suo-Anttila, A J. Tue . "CAFE: A Computer Tool for Accurate Simulation of the Regulatory Pool Fire Environment for Type B Packages". United States. https://www.osti.gov/servlets/purl/4503.
@article{osti_4503,
title = {CAFE: A Computer Tool for Accurate Simulation of the Regulatory Pool Fire Environment for Type B Packages},
author = {Gritzo, L A and Koski, J A and Suo-Anttila, A J},
abstractNote = {The Container Analysis Fire Environment computer code (CAFE) is intended to provide Type B package designers with an enhanced engulfing fire boundary condition when combined with the PATRAN/P-Thermal commercial code. Historically an engulfing fire boundary condition has been modeled as {sigma}T{sup 4} where {sigma} is the Stefan-Boltzman constant, and T is the fire temperature. The CAFE code includes the necessary chemistry, thermal radiation, and fluid mechanics to model an engulfing fire. Effects included are the local cooling of gases that form a protective boundary layer that reduces the incoming radiant heat flux to values lower than expected from a simple {sigma}T{sup 4} model. In addition, the effect of object shape on mixing that may increase the local fire temperature is included. Both high and low temperature regions that depend upon the local availability of oxygen are also calculated. Thus the competing effects that can both increase and decrease the local values of radiant heat flux are included in a reamer that is not predictable a-priori. The CAFE package consists of a group of computer subroutines that can be linked to workstation-based thermal analysis codes in order to predict package performance during regulatory and other accident fire scenarios.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {3}
}

Conference:
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