Geyser Cross-Section Simulator (2D)

Geothermal Heating

Heat rate 1.0x

Chamber Geometry

Chamber depth 10 m

Groundwater warming…

Live Readout

Chamber temp

20 °C

Boiling pt. @ depth

100 °C

Pressure

1.0 bar

Eruptions

How it works

A geyser is a narrow, constricted plumbing system underground: a deep chamber connects to the surface through a slim conduit. The weight of the water column above the chamber adds hydrostatic pressure, and higher pressure raises water's boiling point well above 100°C — the deeper the chamber, the hotter the water can get before it boils.

Geothermal heat slowly raises the chamber's temperature. Once it reaches the local, pressure-elevated boiling point, a bubble of steam forms and rises, lifting water out of the narrow conduit above it. That reduces the pressure on the chamber below, which instantly drops the local boiling point — the now-superheated water flashes to steam in a chain reaction, violently ejecting the water column as an eruption.

After the burst, the chamber pressure and temperature collapse, cooler groundwater recharges the chamber, and the boiling point rises back to its resting value — the whole cycle repeats. Bigger chambers need longer to heat but store far more energy, producing longer builds and taller eruptions.