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Regenerative Cooling Channel Simulator

Interactive 3D thermal model of a rocket engine's regenerative cooling jacket: coolant races through channels wrapped around the nozzle wall, absorbing heat from combustion gas before it reaches the injector. Tune flow rate, chamber pressure and channel geometry and watch the wall-temperature and coolant-temperature profiles respond in real time.

Aerospace Engineering & Orbital Mechanics3DAdvanced60 FPS📱 Mobile-adapted⇄ 2D version

Every liquid rocket engine chamber wall faces combustion gas at 3,000+ kelvin for as long as the engine fires, and no metal survives direct contact with that for more than a fraction of a second. Regenerative cooling solves it by routing the propellant itself through a jacket of narrow channels wrapped around the nozzle before injection, so the coolant carries the heat away as fast as the flame delivers it. This simulator builds a real 1D steady-state thermal-resistance model along the nozzle contour — a Bartz-style hot-gas film coefficient that peaks at the throat, a thin conducting copper liner, and a Dittus–Boelter coolant film — and marches the countercurrent energy balance to get the coolant and wall temperature profiles for whatever flow rate, chamber pressure and channel geometry you choose.

⚙ Under the hood

Model the thermal-resistance network of a rocket engine's regenerative cooling jacket: tune coolant flow rate, inlet temperature, chamber pressure and channel width and watch the wall-temperature and coolant-temperature profiles along the nozzle respond in real time.

rocket engineregenerative coolingheat transfernozzlethermalpropulsion

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install