Flow debugging method and system for ship cooling water system

The invention discloses a flow debugging method and system for a ship cooling water system, and the method comprises the steps: building a pipe network model of the ship cooling water system, and enabling various parts in the pipe network model to comprise pipelines and valves; setting data parameters of each part in the pipe network model, setting the resistance coefficient of the valve to be minimum, and recording the minimum resistance coefficient as a first valve resistance coefficient; calculating a first flow value in each section of pipeline according to the set value of the data parameter and the first valve resistance coefficient; the first flow value is compared with a preset flow range, whether the first flow value is within the preset flow range or not is judged, and a second valve resistance coefficient of each valve is obtained according to the flow value within the preset flow range; and calculating the first valve opening according to the resistance coefficient-valve opening curve and the seco