Pipe network analysis

U radu se promatra ovisnost ulaznog protoka u sustav i geometrije cijevi o tlakovima i protocima u sustavu . U uvodu su dani opći podaci mrežama cjevovoda. U drugom dijelu zadatka detaljno su objašnjeni ventili koji se koriste u stambenim vodovodima te njihovi principi rada i karakteristike. Nadalje, prikazane su osnove funkcije programa AFT Fathom 9, u kojem je napravljena mreža cjevovoda, te su u tablicama dane vrijednosti dobivenih tlakova za svaki pojedinačni slučaj. Na osnovu navedenih rezultata vidljivo je da mreža cjevovoda uz zadane parametre i odgovarajući odabir geometrije cijevi radi ispravno, te su vrijednosti tlakova u sustavu u propisanim granicama.The paper observes the dependence of the inlet flow into the system and the geometry of the pipe on the pressures and flows in the system. The introduction gives general information about Zagreb's Botinec district. The second part of the task explains in detail the valves used in residential water supply and their operating principles and characteristics. Furthermore, the basics of the function of the AFT Fathom 9 program, in which a pipeline network was made, are presented, and the values of the obtained pressures for each individual case are given in the tables. Based on the above results, it is evident that the pipeline network with the given parameters and the appropriate selection of the pipe geometry works correctly, and the values of pressures in the system are within the prescribed limits