Minor Losses
Minor Loss — Gradual Enlargement (Diffuser)
Head loss in a conical diffuser. The Cl factor depends on the cone angle; the loss is then expressed using the Borda–Carnot velocity-difference term.
Formula
hL = Cl(θ) · (V1 − V2)² / (2g)
Resultlive
- V2 (from continuity)
- 0.625m/s
- Cl(θ)
- 0.42
- Head loss, hL
- 0.075258m
Reference: Gibson's diffuser loss coefficients (Idelchik). Best efficiency around θ ≈ 7–8°.