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The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces by Kathy A. Notarianni
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1NASA Technical Reports Server (NTRS) 19950004845: The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces
By NASA Technical Reports Server (NTRS)
The Building and Fire Research Laboratory (BFRL) was given the opportunity to make measurements during fire calibration tests of the heat detection system in an aircraft hangar with a nominal 30.4 (100 ft) ceiling height near Dallas, TX. Fire gas temperatures resulting from an approximately 8250 kW isopropyl alcohol pool fire were measured above the fire and along the ceiling. The results of the experiments were then compared to predictions from the computer fire models DETACT-QS, FPETOOL, and LAVENT. In section A of the analysis conducted, DETACT-QS AND FPETOOL significantly underpredicted the gas temperature. LAVENT at the position below the ceiling corresponding to maximum temperature and velocity provided better agreement with the data. For large spaces, hot gas transport time and an improved fire plume dynamics model should be incorporated into the computer fire model activation routines. A computational fluid dynamics (CFD) model, HARWELL FLOW3D, was then used to model the hot gas movement in the space. Reasonable agreement was found between the temperatures predicted from the CFD calculations and the temperatures measured in the aircraft hangar. In section B, an existing NASA high bay space was modeled using the CFD model. The NASA space was a clean room, 27.4 m (90 ft) high with forced horizontal laminar flow. The purpose of this analysis is to determine how the existing fire detection devices would respond to various size fires in the space. The analysis was conducted for 32 MW, 400 kW, and 40 kW fires.
“NASA Technical Reports Server (NTRS) 19950004845: The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces” Metadata:
- Title: ➤ NASA Technical Reports Server (NTRS) 19950004845: The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces
- Author: ➤ NASA Technical Reports Server (NTRS)
- Language: English
“NASA Technical Reports Server (NTRS) 19950004845: The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces” Subjects and Themes:
- Subjects: ➤ NASA Technical Reports Server (NTRS) - CLEAN ROOMS - COMPUTATIONAL FLUID DYNAMICS - DETECTION - FIRES - GAS FLOW - HANGARS - HIGH TEMPERATURE GASES - SMOKE - BAYS (STRUCTURAL UNITS) - GAS TEMPERATURE - GAS TRANSPORT - ISOPROPYL ALCOHOL - Notarianni, Kathy A. - Davis, William D.
Edition Identifiers:
- Internet Archive ID: NASA_NTRS_Archive_19950004845
Downloads Information:
The book is available for download in "texts" format, the size of the file-s is: 65.99 Mbs, the file-s for this book were downloaded 71 times, the file-s went public at Tue Oct 04 2016.
Available formats:
Abbyy GZ - Animated GIF - Archive BitTorrent - DjVuTXT - Djvu XML - JPEG Thumb - Metadata - Scandata - Single Page Processed JP2 ZIP - Text PDF -
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2The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces
By Notarianni, Kathy A. and Davis, William D.
The Building and Fire Research Laboratory (BFRL) was given the opportunity to make measurements during fire calibration tests of the heat detection system in an aircraft hangar with a nominal 30.4 (100 ft) ceiling height near Dallas, TX. Fire gas temperatures resulting from an approximately 8250 kW isopropyl alcohol pool fire were measured above the fire and along the ceiling. The results of the experiments were then compared to predictions from the computer fire models DETACT-QS, FPETOOL, and LAVENT. In section A of the analysis conducted, DETACT-QS AND FPETOOL significantly underpredicted the gas temperature. LAVENT at the position below the ceiling corresponding to maximum temperature and velocity provided better agreement with the data. For large spaces, hot gas transport time and an improved fire plume dynamics model should be incorporated into the computer fire model activation routines. A computational fluid dynamics (CFD) model, HARWELL FLOW3D, was then used to model the hot gas movement in the space. Reasonable agreement was found between the temperatures predicted from the CFD calculations and the temperatures measured in the aircraft hangar. In section B, an existing NASA high bay space was modeled using the CFD model. The NASA space was a clean room, 27.4 m (90 ft) high with forced horizontal laminar flow. The purpose of this analysis is to determine how the existing fire detection devices would respond to various size fires in the space. The analysis was conducted for 32 MW, 400 kW, and 40 kW fires.
“The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces” Metadata:
- Title: ➤ The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces
- Authors: Notarianni, Kathy A.Davis, William D.
- Language: English
“The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces” Subjects and Themes:
- Subjects: ➤ Hangars--Fires and fire prevention--Computer simulation - Ceilings--Thermal properties--Computer simulation - Fire--Models
Edition Identifiers:
- Internet Archive ID: useofcomputermod5304nota
Downloads Information:
The book is available for download in "texts" format, the size of the file-s is: 124.02 Mbs, the file-s for this book were downloaded 95 times, the file-s went public at Tue Mar 28 2017.
Available formats:
Abbyy GZ - Archive BitTorrent - Cloth Cover Detection Log - Contents - DjVuTXT - Djvu XML - Item Tile - MARC Source - Metadata - OCR Page Index - OCR Search Text - Page Numbers JSON - Scandata - Single Page Original JP2 Tar - Single Page Processed JP2 ZIP - Text PDF - chOCR - hOCR -
Related Links:
- Whefi.com: Download
- Whefi.com: Review - Coverage
- Internet Archive: Details
- Internet Archive Link: Downloads
Online Marketplaces
Find The Use Of Computer Models To Predict Temperature And Smoke Movement In High Bay Spaces at online marketplaces:
- Amazon: Audiable, Kindle and printed editions.
- Ebay: New & used books.
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- Ebay: New and used books.