Fsmt311 week 7 forum and responses | Science homework help
- Read the "NIST Technical Note 1856" found in this week's readings and then discuss the following:
a. Summarize the incident b. Discuss the model used for the simulation c. Discuss the results of the simulation #1 The history of fire modeling can be traced back to the early 1940’s when mathematical and science formulas were developed to validate or refute how fire patterns developed. Beginning in 1975 fire modeling began to increase across the country as more and more universities and private sector companies such as laboratories utilized fore modeling to research fire patterns and behavior for safety related purposes (Nelson 2002). The difference between a zone model and a field model can be best described as the field model being much more calculation intensive then a zone model. A zone model basically approximates a fire condition in a fire room based on a consistent gas layer with a heat source. A field model utilizes calculations to measure things such as heat and temperature (NIST 2007). Fire modeling is very helpful in planning for safety in future fire situations. The article “The Use of Simulation in Fire Investigation” revealed that using both the zone model and the field model proved to be beneficial for future fire safety. The main difference appears to be that the Consolidated Model of Fire Growth (CFAST) (Zone model) was more accurate than the field model fire dynamic simulator (FDS) The article makes mention that both models proved beneficial but the CFAST was more accurate than the FDS model. “NIST Technical Note 1856” The report reviews an incident that occurred on June 2, 2011 in a residential basement fire in San Francisco California that resulted in the death of two San Francisco firefighters. The fire model utilized to research the incident was a Fire Dynamics Simulator (FDS) model, which is a field model type of fire modeling and is the most popular type of field modeling. The research of the fire utilizing the simulations summarized that the two fire fighters were caught in the flow path of the fire traveling from the basement to the front open portion of the fire building. The firefighter’s injuries from being caught in the flow path resulted in their deaths.
References
NIST Modeling Study Reveals the Lethal Dynamics of a San Francisco House (2015, January 30). Targeted News Service. Retrieved from http://search.proquest.com/docview/1649680789/ #2