Minor Losses
Minor Loss — Sudden Contraction
Head loss when a pipe contracts abruptly from D1 to D2. The downstream velocity V2 is used.
Formula
hL = Kc · V2² / (2g)
Resultlive
- Area ratio, A2/A1
- 0.250
- Loss coefficient, Kc
- 0.385
- Velocity head, V2²/2g
- 0.20387m
- Head loss, hL
- 0.078491m
Reference: Weisbach's coefficient table for sudden contraction (table interpolated linearly).