The Research On Generation Technology Of Building Air-Flow-Tree And Consummate Of The Application Software

With the hard work of the predecessor, the application software to calculation on properties of smoke flow in fire building has been open out. Compared with the Japanese data, the simulation data are very close, and the exploitation of the application software is successful. But the application software also has some problems, limitations and bugs. Under the gain fruits, this paper's author does some improvement, and the application software becomes more consummate and more applicable. Shown like the follow:Based on a deep understanding of the knowledge of graph theory and fire network-models basis,the author given out the thinking of automatic generation of building air-flow-tree, construction of the building air-flow-tree mathematical model and given a solution. Moreover, using Matlab compile the automatic generation procedures, a multi-room building air-flow-tree are generated automatically. This paper, through practical examples shows the correctness of the algorithm and the improved application software is successful.In facet of software improvements, adding the model of a toxic gases CO , the software can be calculated for the moment nodes'CO concentration, given the fire danger criterion, the software can judge for themselves whether the nodes in a dangerous state. The fire in the software development process in conditions of flashover judgment, and we should pay attention to the internal-burning of the phenomenon. The author has been researched in the development of the smoke layer height; changes in the height of the smoke layer were dynamic displayed. The fire network model of the mechanical exhaust volume has been done, and by improving breathing flow forecast by Simulation software. The mechanical exhaust to the size of the analysis and prediction, a staff to ensure safe evacuation to design highly critical of the performance of the exhaust system design, software can calculate the moment of mechanical exhaust.The improvements of flow coefficient, fire heat release rate, the construction of the wall material data through the smoke flow software import some; reduce the user input workload, provided for the convenience and lower skill requirements.Building Fire entities through experiments and software simulation, compared with the experimental data and calculated results is very close, confirmed the software improvement is successful. By combining of the software and safe evacuation, safety analysis has been done under the conditions of natural smoke extraction. It's shown that the generation is the correct and the improvement to the software is a success.With the improvement of input part of the application software, the work to input has become some easy, accelerated the commercialization of software applications process.