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Lab 27: Toroidal Internal Combustion & Harmonic Scavenging Simulator

By Joseph Kasey Enckler | Thermodynamics & Acoustic Propulsion

$3:2 / 4:3$ Helmholtz Acoustic Supercharging, Counter-Rotating Toroidal Squish Vortices, & $109.5^\circ$ Tetrahedral Liner Compliance ($\delta > 0$)

Stage 1 Acoustic Scavenging: $\mu(S, \Delta\nu) = e^{-D_{KL}(P_{\text{valve}} \parallel Q_{\text{runner}})}$
Stage 2 Indicated Work: $W(S) = \mu\eta\dot{E}_0 S^m - \gamma(\delta) S^k$
Stage 3 Knock & Scuff Limit: $\lim_{\delta \to 0} C^* = 0 \implies \text{Detonation / Seizure}$

F1 / Le Mans V10 Harmonic Scavenger (3:2 Lock)

Constructive 3:2 Helmholtz ram wave arrives at intake valve before BDC; dual toroidal vortices burn homogeneously.

COMPRESSION (TOROIDAL)
Crank Angle ($\theta$)
360° CA
Inst. Pressure
142.0 bar
Gas Temp ($T$)
2,480 K
Ram Wave ($\Delta P$)
+0.42 bar
Helmholtz Ram Wave Toroidal Vortex Flame $109.5^\circ$ Oil Micro-Vortices Knock Shock