Joukowsky surge, ΔP = ρ·a·ΔV: a 2 m/s instantaneous stop screens at roughly 18–30 bar above operating pressure across a 900–1,500 m/s celerity range
ΔP = ρ·a·ΔVobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| As of | 2024 |
| Source | Joukowsky equation / AFT · Instantaneous Waterhammer Equation; states the Joukowsky relation between pressure rise, density, wave speed and instantaneous velocity change |
| Review | checking…review by 2027-10-19 · slow cadence |
| Recorded changes | last 2026-06-29 |
| Claim id | joukowsky-surge-a-2-m-s-instant-stop-can-spike |
Where the guide uses it
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