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By analyzing node equations in gas network, a mathematical model of steady-state calculation in urban pipeline with node method was established. Computer programs using MATLAB have been written. The algorithm can be used for hydraulic adjustment calculation in multi-circle city transmission and distribution pipeline networks, for optimization and for analysis of operating and accident conditions,...
This study presents a method for solving the mine ventilation networks based on Kirchhoff's first law, i.e. based on balances of air mass flows through network nodes (1). A dependence relating the pressure at nodes placed at the beginning and the end of ventilation branch to the volumetric flow of air through the branch (10, 16) and air mass flow (17, 26) is provided. Moreover, the formula for aerodynamic...
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