time delay (deltaT) between two pressure pulses recorded at different locations
 

Hi,
I simulated a 2 way FSI of linear elastic artery wall using fluent. In post processing i created a point at the inlet and a point at the outlet which are separated by a distance of 55 mm. when i plotted the pressure vs time at the both locations, i couldn't find any time delay between them. i have attached the plots. Any help would be useful