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Search Publications by: Erik L. Johnsson (Fed)

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Displaying 26 - 50 of 126

Characterizing Heat Release Rate Transients

April 26, 2012
Author(s)
Rodney A. Bryant, Erik L. Johnsson, George W. Mulholland
A series of experiments was performed to characterize the time response of a large-scale open calorimeter to square-wave pulses in terms of peak heat release rate, width of the peak, and conservation of energy. Quantitative heat release rate measurements

Experimental Study of the Three Dimensional Internal Structure of Underventilated Compartment Fires in an ISO 9705 Room.

February 8, 2012
Author(s)
Kelly M. Opert, Andrew J. Lock, Matthew F. Bundy, Erik L. Johnsson, Cheolhong Hwang, Anthony P. Hamins, Stephen P. Fuss, Ki-Yong Lee
This report documents a set of 9 full scale ISO 9705 room under-ventilated compartment fire experiments for the purpose of guiding the development of the National Institute of Standards and Technology (NIST) computer fire model - Fire Dynamics Simulator

Effects of Fuel Location and Distribution on Full-Scale Underventilated Compartment Fires

January 3, 2011
Author(s)
Andrew J. Lock, Cheolhong Hwang, Matthew F. Bundy, Erik L. Johnsson, Gwon H. Ko
Experimental and numerical studies were conducted to investigate the effect of fuel location and distribution on full-scale underventilated compartment fires in an ISO 9705 room. Heptane fuel was burned in three different fuel distributions: single

Fire Effluent Component Yields from Room-scale Fire Tests

October 1, 2010
Author(s)
Richard G. Gann, Jason D. Averill, Erik L. Johnsson, Marc R. Nyden, Richard D. Peacock
Estimation of the time available for escape (ASET) in the event of a fire is a principal component in fire hazard or risk assessment. Valid data on the yields of toxic smoke components from bench-scale apparatus is essential to accurate ASET calculations

Chemical Species and Temperature Mapping in Full Scale Underventilated Compartment Fires

July 5, 2010
Author(s)
Andrew J. Lock, Matthew F. Bundy, Erik L. Johnsson, Kelly M. Opert, Anthony P. Hamins, Cheolhong Hwang, Ki Y. Lee
Many injuries and deaths throughout the world are caused by fires each year. Many of the deaths are the result of toxic gas inhalation, such as carbon monoxide, by a victim remote from the actual fire source. In order to facilitate better building

Experimental Study of the Effects of Fuel Type, Fuel Distribribution, and Vent Size on Full-Scale Underventilated Compartment Fires in an ISO 9705 Room (NIST TN 1603)

October 1, 2008
Author(s)
Andrew J. Lock, Matthew F. Bundy, Erik L. Johnsson, Anthony P. Hamins, Gwon Ko, Cheolhong Hwang, Stephen P. Fuss, Richard H. Harris Jr.
This report describes new full-scale ISO9705 compartment fire experiments, which include local measurements of temperature and species composition. The objective of this study was to generate a database of comprehensive and accurate measurements which can

Residential Structure Separation Fire Experiments

August 1, 2008
Author(s)
Alexander Maranghides, Erik L. Johnsson
Building codes often allow structures with window openings and combustible exteriors to be built with as little as 1.8 m (6 ft) of separation between them. In a recent full-scale laboratory experiment at the National Institute of Standards and Technology

Energy Balance in a Large Compartment Fire

April 1, 2008
Author(s)
Anthony P. Hamins, Erik L. Johnsson, Alexander Maranghides
The National Institute of Standards and Technology (NIST) and the Nuclear Regulatory Commission (NRC) are collaborating to assess and validate fire computer codes for nuclear power plant applications. This evaluation is being conducted through a series of

Analysis of Thermocouple Behavior in Compartment Fires

September 27, 2007
Author(s)
Sung C. Kim, Anthony P. Hamins, Matthew F. Bundy, Gwon Ko, Erik L. Johnsson
The present study uses numerical simulations and analytical solutions to investigate the heat transfer processes associated with bare bead and double shield aspirated thermocouples. The uncertainty of thermocouple temperature measurements is emphasized