A static load flow calculation, commonly used in conventional software, is often insufficient, as it always assumes a steady-state condition of the network after each time step. The dynamic load flow calculation offers a solution to this problem. It enables: A temporally and spatially resolved dynamic bidirectional calculation of any thermal network, taking into account the hydraulic inertia of water. A realistic simulation of temperature changes in the network by adjusting the temperatures at the supply or return feed-in, ensuring that temperature variations reach consumers with a delay rather than taking effect immediately within the same time step, as in static calculations. The calculation of intentionally induced temperature increases or decreases (e.g., through the use of heat pumps) within the supply or return flow.