To compute the weighted average velocity, the simple average velocity of each profile segment is considered and given a weight based on its length:
- Va =Average velocity for the pipe (m/s, ft/s)
- Vui =Upstream velocity for segment i (m/s, ft/s)
- Vdi =Downstream velocity for segment i (m/s, ft/s)
- Li =Length of the profile segment i (m, ft)
- Lt =Total length of the pipe (m, ft)