Describes the computer program developed for the Fire Research Station by Scientific Control Systems Ltd. to predict the movement of smoke from a fire in a building. This can be run ineither deterministic or stochastic modes.< Explains the physical model used to describe the movement of smoke through a building and outlines the computer technique used to solve the resulting equations. Presents some preliminary results obtained with the model and considers possible improvements. Discusses applications of the model.
Describes research to study movement of air through fully or partially open doorways with and without influence of temperature, and to ascertain amount of supply air required toprevent this movement. Studies door openings of 0.10 to 104 m. wide and temperature differential of 0 to 12 deg.C. States that from these results critical areas in hospitals may be designed more effectively to given requirements.
Reviews mechanism of natural ventilation. Provides mathematical expressions for wind pressure distribution, stack effect, and air flows. Treats air leakage component's characteristics, both individually and connected in series or parallel. Employs model simplification to 1 and 2 Junctions. Illustrates a 1-Junction model calculation. Finds calculated and measured values agreed well for a large factory hall.
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