Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

Prediction of Turbulent Mixed Convection Induced by Localized Heat Sources on Ridges

Get access (open in a dialog) DOI: 10.1615/IHTC10.3330
pages 513-518

Abstrakt

A numerical model for the simultaneous calculation of velocity and temperature fields, and fire propagation In ridges is presented.
Turbulent fluid flow calculations are performed using the SIMPLEC procedure applied to a boundary fitted coordinate system, while the fire rate of spread is computed using a combination of Rothermel's Are spread model, a two semi-ellipse formulation for fire shape, and the Dijkstra dynamic programming algorithm for fire growth simulation. To assess the influence of the ridge geometry upon Isothermal flow, calculations are carried out for eight different configurations, Fire computations are then made for the same configurations, and, for each configuration, two types of fuel are tested. Results show a higher rate of spread for the ridge with the lower intersection angle, confirming observations which report unusually high propagation rates of fires in these topographies.