A Research On Forecasting The Properties Of Fire Smoke Flow In Multiroom Building With Field-Network Model

This research based on the mastery of the application software of calculation on properties of fire smoke flow in building. Although the software is compiled successfully in theory and was validated with the experiment, the author found that the result is incorrect when the building is a multilayer and multiroom construction during the primal work. So it's necessary to study this matter. Aiming at solving the problem, the author improved the software.In addition, the calculation model of the software is the network-model. In this model, the most essential hypotheses were brought forward:â‘ the room in the building is a node neglecting its'volume;â‘¡smoke mix with air in a very short term, the temperature and the smoke concentration are well-proportioned in the room. Therefore, the net-model can only apply to the special building: there is little discrepancy in room volume. However, the volume of some room in the modern high building and large public construction are much larger than others, such as assembly room, so the calculation consequence of the software would be incorrect with the supposition. Thereby, in the dissertation the author combined the network-model and the field-model to solve the problem.Through calculating the properties of fire smoke flow in a building which has a much larger room than others, we can see that combining field-model and net-model is a good way to solve the problem and has a wide foreground.