🌊 Surge Tank: Mass Oscillation After Load Rejection and Thoma Area (2D)

Side view of a reservoir, a long pressure tunnel and a surge tank in which the water level swings up and down after the turbines suddenly stop or change load. Set the tunnel length and diameter, the tank diameter, the flow, the friction, the head and the kind of event, and see the swing period, the peak rise and whether a governed turbine makes the swing die out or grow. The period, the peak rise, the energy exchange and the Thoma stability area are checked numerically, with four in-page numerical checks.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install