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Pipeline Network Simulation Calculation Based on Improved Newton Jacobian Iterative Method

The accurate calculation of the pipe network module contributes to the effective simulation of chemical processes and can improve the production of chemical processes. At present, the pipe network calculation of chemical processes is generally solved by the secant method. Although this method is convenient, it cannot meet the accuracy of the pipe network calculation, and even cannot converge. Therefore, this paper proposes an improved Newton Jacobian iterative method to improve the accuracy of the pipe network calculation, which realizes the efficient, stable and accurate solution of the flow and pressure of the pipe network system. By improving the selection of the initial value, the convergence of the pipe network calculation and the operation efficiency of the Jacobian iterative method are improved. The effectiveness of the proposed method is illustrated by comparison with the secant method. Finally, the minimum branch and the merge-branch pipeline are actually calculated for the simulation test. The results show that the flow rate calculated by the pipe network and the pressure accuracy are significantly improved.