The air volume entering through Junction X exceeds 100% of a pipe station's computing volume

A Caution message in AFT Impulse.

The air volume entering through Junction X exceeds 100% of a connected pipe station's computing volume.

The pipe station's computing volume is determined by the section length calculated in the Sectioning panel and the cross-sectional area of the connected pipe. If two pipes are connected the average of the pipe station volumes of each of the connected pipes is used.

Impulse's solution method assumes that the pipes are liquid full. If the volume of air in the system has not exceeded the volume of a single pipe station, then the liquid full assumption only has a minor impact on accuracy. However, if the volume of air entering the system exceeds the volume of a computational section then the liquid full assumption will cause a larger decrease in accuracy. Impulse uses an adjusted solution method to account for the air entering at the air valve, but caution should be used when making decisions based on these results.