Performance characteristics of combustion and emission in pulse detonation engine

A shift in combustion concepts from conventional isobaric to constant volume combustion (CVC) has various benefits. Pulse detonation combustion (PDC) works on CVC, significantly increasing the engine's thermodynamic efficiency. Pollutant emissions from pulse detonation engines (PDE) have received little research. PDE has higher temperature combustion, resulting in a higher NOx emission. In the present paper, the formation of NOx is investigated using the computational fluid dynamics (CFD) method. A model is constructed by varying pressure, temperature, spark size, and geometry for hydrogen fuel. SST K- Omega model with transient conditions is used. CFD analysis was performed to calculate EINOx for 12 cm and 20 cm tubes. Encouraging results were obtained. The size of 12 cm tube produced EINOx of 200 g/kg of fuel, and a 20 cm tube produced 250 g/kg of fuel. Computed results are in good agreement with previous literature.