A Warning message in AFT xStream

Full Message text is:

The maximum difference between the AFT Arrow Steady solution and the MOC Steady Solution for velocity is X%

 

The MOC Steady Solution is used to transition from the AFT Arrow Steady results to the MOC Transient simualtion, and some change in system velocities is expected. This difference is checked prior to the MOC Transient simulation. The user can define an allowable change between the two steady solutions on the MOC Steady Solution panel, with a default value of 10%.

Pipes with initial velocities less than 10 ft/sec are not included in this check as a small absolute change in velocity can be a large relative change in velocity.