Water Phase Explorer

Move through ice → liquid → saturated liquid → two-phase mixture → saturated vapor → superheated vapor. The T–v state point, piston-cylinder, quality x, temperature, pressure, and specific volume update together.
Interactive teaching model
Temperature–specific volume diagram
Log scale on specific volume so compressed liquid and vapor can be seen together.
Liquid
Linked piston–cylinder view
For the selected isobar, the piston load represents constant external pressure. Heating moves the state along that pressure line. The cylinder animation exaggerates volume changes for visibility.
IceLiquid heatingBoiling / x: 0→1Superheated vapor
Property values are generated by a compact teaching model. Saturation temperature uses the IAPWS-IF97 Region-4 saturation relation; saturated specific volumes and off-saturation behavior are approximate. Use steam tables or a property package for design calculations.