Simulation of Engineering Networks and Assessment of the Accuracy of the Mathematical Model
The article shows the way to implement a quasilinear mathematical model of flow distribution in pipeline engineering networks that is effective in a wide range of changes in the multidimensional random vector of loads at network nodes and provides reliable determination of the parameters of the probability distribution functions of flows in active and passive network elements. The proposed model consists in determining the matrix of generalized network parameters - the load distribution coefficients along the branches of the circuit, calculated at the point corresponding to the mathematical expectation of the node loads. On the basis of the obtained model, the convergence of the results obtained with the results of simulation of engineering networks is proved by means of a numerical experiment on an electronic computer. The effectiveness of the developed model, the corresponding algorithms and a set of programs for an electronic computer is shown - the value of the criterion of reduced costs for parametric optimization of engineering networks can be reduced by 5-7% in comparison with the methods used in practice. The possibility of obtaining at the design stage of the equivalent hydraulic characteristics of engineering networks in the form corresponding to the data of experimental measurements of pressures at the nodes of real complex engineering networks is proved.