Post-flashover fires in shipboard spaces have pronounced effects on adjacent spaces due to highly conductive boundaries. A model has been developed which predicts the thermal environment in such spaces. The model is based on radiative and convective heat transfer involving the hot wall (common boundary between post-flashover and adja cent space), the cold walls, and a gray gas. This theoretical description is reduced to a set of simultaneous non-linear equations that are solved by a Newton-Rapheson method. Experimental data provided the input function for the hot wall, and the model predictions for the gas temperature and the cold wall temperature have been compared with the experimental data. The comparisons shown are conservative, but representative, in accor dance with modeling assumptions.
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References
1.
Kawagoe, K., "Fire Behavior in Rooms," Building Research Institute , Report No. 27, Tokyo, 1958.
2.
Thomas, P.H. , and Heselden, A.J.M. , "Fully Developed Fires in Single Compartments. A Cooperative Research Programme of the Conseil Internationale du Batiment ," Conseil Internationale du Batiment, Report No. 20, Fire Research Note 923, 1972.
3.
Thomas, P.H. , Heselden, A.J.M., and Law, M., "Fully Developed Compartment Fires: Two Kinds of Behavior," Fire Research Technical Paper, No. 18, HMSO, London, 1967.
4.
Croce, P.A. (ed.), "A Study of Room Fire Development: The Second Full-scale Bedroom Fire Test of the Home Fire Project," Factory Mutual Research Corporation Serial 21011.4, RC 75—T 31, Norwood, MA, 1975.
5.
Harmathy, T.Z. , "A New Look at Compartment Fires," Parts I and II, Fire Technology, Vol. 8, 1972, Part I-pp. 196-219; Part II-pp. 326-351.
6.
Harmathy, T.Z. , "Mechanism of Burning of Fully-developed Compartment Fires," Combustion and Flame, Vol. 31, 1978, pp. 256-273.
7.
Thomas, P.H. , and Nilsson, L., "Fully-developed Compartment Fires: New Correlations of Burning Rates ," Fire Research Note No. 657, 1973 .
8.
Bullen, M.L. , "A Combined Overall and Surface Energy Balance for Fully-developed Ventilation Controlled Liquid Fuel Fires in Compartments ," Fire Research, Vol. 1, 1977, pp. 171-185.
9.
Bullen, M.L., and Thomas, P.H., "Compartment Fires with Non-cellulosic Fuels," 17th Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, 1979, pp. 1139-1148.
10.
Drysdale, D. , "The Post-flashover Compartment Fire," Chapter 10 in An Introduction to Fire Dynamics, John Wiley & Sons , NY, 1985, pp. 304-350.
11.
Bohm, B., "Fully Developed Polyethylene and Wood Compartment Fires with Application to Structural Design," Technical University of Denmark, Laboratory of Heating and Air Conditioning, Denmark , 1977.
12.
Kawagoe, K., and Sekine, T., "Estimation of Temperature-time Curves in Rooms," Occasional Report No. 11, Building Research Institute , Tokyo, 1963.
13.
Pettersson, O. , Magnusson, S.E., and Thor, J., "Fire Engineering Design of Structures," Publication 50, Swedish Institute of Steel Construction, 1976.
14.
Babrauskas, V., and Williamson , R.B., "Post-flashover Compartment Fires: Basis of a Theoretical Model," Fire and Materials, Vol. 2, 1978, pp. 39-53.
15.
Babrauskas, V., and Williamson R.B., "Post-flashover Compartment Fires: Application of a Theoretical Model," Fire and Materials , Vol. 3, 1979, pp. 1-7.
16.
Babrauskas, V., "A Closed-form Approximation for Post-flashover Compartment Fire Temperatures," Fire Safety Journal, Vol. 4, 1981, pp. 63-73.
17.
Babrauskas, V. , "COMPF2-A Program for Calculating Post-flashover Fire Temperatures," NBS Technical Note 991, National Bureau of Standards, Gaithersburg, MD, 1979.
18.
Back, G.G., Fulper, C.R., Ouellette, R.J., Scheffey, J.L., Willard, R.L., and Leonard, J.T., "Post-Flashover Fires in Simulated Shipboard Compartments: Phase II—Cool— ing of Fire Compartment Boundaries," NRL Memorandum Report 6896, September 19, 1991.
Back, G.G., Scheffey, J.L., Williams, F.W., Toomey, T.A., Darwin, R.L., and Ouellette, R.J., "Post-Flashover Fires in Simulated Shipboard Compartments—Phase III Venting of Large Shipboard Fires," NRL Memorandum Report NRL/MR/6180-93-7338, June 9, 1993.
21.
Scheffey, J.L. , Toomey, T.A., Hunt , S.P., Durkin, A.F., Darwin, R.L., and Williams , F.W., "Post-Flashover Fires in Simulated Shipboard Compartments—Phase IV: Impact of Navy Fire Insulation ," NRL Memorandum Report NRL/MR/6183-93-7335, June 9, 1993.
22.
Williams, F.W. , Scheffey, J.L., Hill , S.A., Toomey, T.A., Darwin, R.L., Leonard, J.T., and Smith, D.E., "Post-flashover Fires in Shipboard Compartments Aboard ex-USS SHADWELL: Phase V-Fire Dynamics ," NRL/FR/6180-99-9902, May 31, 1999.
23.
Bailey, J.L. , and Tatem, P.A., "Validation of Fire/Smoke Spread Model (CFAST) Using ex-USS SHADWELL Internal Ship Conflagration Control ISCC Fire Tests," NRL Memorandum Report NRL/MR/6180-95-7781, September 30, 1995.
24.
Williams, F.W. , Toomey, T.A., and Carhart, H.W., "The ex-SHADWELL Full-scale Fire Research and Test Ship," NRL Memorandum Report 6074, reissued September 1992.
25.
Barnett, J.R. , Worcester Polytechnic Institute, Worcester MA, personal communication, May 1990.
26.
Emmons, H.W., "The Prediction of Fires in Buildings," Seventeenth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, 1978.
27.
Eckert, E.R.G. and Draker, R.A., Jr., Analysis of Heat and Mass Transfer, McGraw-Hill, Inc., New York, 1972 .
28.
Atreya, A., "Convective Heat Transfer," The SFPE Handbook of Fire Protection Engineering , National Fire Protection Association, Quincy, MA, 1988.
29.
Darwin, R.L., Leonard, J.T., and Scheffey, J.L., "Fire Spread by Heat Transmission Through Steel Bulkheads and Decks ," Proceedings of IMAS Conference on Fire Safety on Ships, Institute of Marine Engineers, London, England, May 1994.
30.
Naval Sea Systems Command, "Naval Ships' Technical Manual," S9086-S3-STM-010, Chapter 555, Shipboard Firefighting, First Revision, Naval Sea Systems Command, Department of the Navy, Washington, DC, 1 June 1993.
