Study And Applications Of Network Splitting Algorithm Based On Node Pressure Energy

In order to avoid the limitation of the circuit wind flux method in the current ventilation network sub-wind algorithm.At the same time,on the basis of the study of the wind pressure method of the predecessors,studies further the network sub-wind algorithm based on the node pressure energy.More,this thesis systematically illustrates the step of network sub-wind algorithm based on node pressure energy and the implementation of the algorithm using MATLAB.Firstly,this algorithm will establish the topology data set with depository relation involved in nodal pressure energy algorithm by using the theory of graph theory.Secondly,this algorithm will generate the topological relation of network graph based on the topological data set and to analysis and inspect the topological relation.Finally,this algorithm will calculate the air amount for the ventilation network based on the node pressure energy algorithm when the ventilation network established satisfies the requirements of the solution.Then this algorithm will further analysis the more important parameters of ventilation technic based on the criterion Coal mine ventilation technical condition and at the same time this algorithm will simply analysis the rationality of this parameters.The experiments show that this algorithm not only can establish the topological relation of ventilation system with two air intake and three return air shaft by using MATLAB not only realized the topological relation of the ventilation systems,but also completes the reasonable analysis of various topological relationships at the same time and achieves the air distribution for this ventilation system based on the node pressure energy algorithm.Through analysis of the parameters of ventilation technic,including operation parameters of coal mines fan,resistance distribution of three area,the maximum resistance path and public resistance and so on,the results show that the network sub-wind algorithm based on the node pressure energy is practical.