![]() The reason why this behavior occurs is because in some systems, flow can often reverse direction over the course of a day. The absolute value of the flow result field is always indicative of the flow rate through that pipe, but a negative sign will be added to indicate direction. If water is flowing from the "stop node" to the "Start node", the flow arrow will point that way and the flow result value will be negative. If water is flowing from the "start node" to the "stop node", the flow arrow will point that way and the flow result value will be positive. The flow arrow symbol on the pipe in the plan view always indicates the direction of flow, and the orientation of the pipe itself is indicated by the "Start node" and "Stop node" fields in the pipe properties. ![]() What does it mean if the calculated flow in a pipe is negative? SolutionĪ negative flow value (or other hydraulic result like velocity) indicates orientation of the flow with regard to the orientation of the pipe itself. WaterGEMS, WaterCAD, HAMMER, SewerGEMS, CivilStorm, StormCAD, SewerCAD, PondPack ![]()
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