A Critical Warning message in AFT Impulse.

Full message text is:

The following Zero-Length Connectors experienced cavitation during the simulation, results are not valid

 

A Zero-Length Connector is a pipe model option which allows the user to define the pipe with no length associated with it. This tool is meant to help simplify a model with many short connections between system components and is not meant to capture some complex transient events including cavitation. Results shown with this message should not be used to make engineering decisions.

The user should assign lengths to the listed pipes and re-run the model to avoid cavitation in the Zero-Length Connector. Note that Zero-Length Connectors are commonly used to avoid run time concerns associated with having short pipes in a model, and replacing the Zero-Length Connector with a pipe of negligible length may cause unnecessarily long run times due to the sectioning process.