Thermoacoustic Standing Wave Resonance

Heat drives pressure oscillations in a resonant tube — Rijke tube dynamics visualized with temperature, pressure, and velocity fields.

Heat Source Position: 0.25 L

Heat Power: 0.50

Tube Length (m): 1.00

Harmonic Mode: 1

Rijke Tube Physics: A heated mesh in a vertical tube creates self-sustained oscillations when positioned near the quarter-length. Heat released in phase with velocity perturbations (Rayleigh criterion) feeds energy into acoustic modes. Resonant frequency f = n·c/(2L), where c ≈ 343 m/s. Damping occurs when heat source is in the wrong phase. Frequency: ? Hz | Growth rate: ?