Basics of Pulse Combustion Technology

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Gas dynamics in tailpipe (2)P23: Outlet planeGas velocity oscillation near tailpipe outlet
Conclusions• The proposed PC is simulated and a self-sustained pulsecombustion process is achieved.• The predicted phase delay between gas pressure , temperature,and heat loss is consistent with phase relation described byRayleigh’ criterion• The predicted PC have a pulse frequency of 250 Hz, exitvelocity of 40~125 m/s, pressure amplitude of 12 kPa• The novel CFD model using a dynamic mesh have an ability tosimulate the dynamics of inlet valve and its resulting fuelinflux.• The coupling of dynamic of the flapper, influx of fuel, acousticpressure was simulated by novel CFD model
Page 2 and 3: • What is pulse combustion (PC)
Page 4 and 5: Basic information of PC• Pulse co
Page 6 and 7: Types of pulse combustor• Operati
Page 8 and 9: Advantages• Pulse combustion can
Page 10 and 11: Applications of pulse combustor•
Page 12 and 13: PC spray dryer
Page 14 and 15: Flash dryingFigure 5 Novodyne Ltd.
Page 16 and 17: Schematic of the simulatedmechanica
Page 18 and 19: Dynamic mesha) Dynamic mesh when th
Page 20 and 21: Equations of PC model• Mass balan
Page 22 and 23: Combustion modelCIn this work, the
Page 24 and 25: Boundary condition (2)• Inlet: to
Page 26 and 27: Solutions (2)Figure 3 Convergence h
Page 28 and 29: Flame front during a cyclekmol/m 3
Page 30 and 31: Phase relations between gas pressur
Page 32 and 33: fuel influx during a cycle1.4Influx
Page 36 and 37: The fabricated small-scaledmechanic
Page 38 and 39: Operational conditions• Pulse com

Basics of Pulse Combustion Technology

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