Simulation Study of Ignition Characteristics of Impinging Sprays in Constant Volume Chamber

The present study involves the simulation of a constant volume, non-premixed, hot surface spray combustion diesel fuel for given set injection pressure, compressed air pressure (cylinder pressure) and temperature (hot plate temperature) their effects on ignition delay period. Fuel was varied from 100 bar – 300 in steps bar, cylinder range 20 to 40 (in 10 bar) 623 K 723 (50 steps). problem solved using 2D axisymmetric geometry. A structured mesh about 1.24 lac nodal points created tested grid independency. For solving flow behavior, solver used with turbulence model k-ε enhanced wall functions. While volumetric eddy dissipation solve phenomena. Ignition period calculated help static versus time plot. It is found that keeping any two operating parameters constant, third parameter inversely proportional results are fairly good agreement experimental studies at same conditions.