水素ガス噴流の自発着火に関する直接数値シミュレーション : 続報(熱工学,内燃機関,動力など)

概要

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In order to examine the ignition process, direct numerical simulations have been carried out on spontaneous ignition of hydrogen gas jets injected parallel to a steady hot air stream. The simulations are based on a modified HSMAC method. Full chemical kinetics was used in the calculations. All the calculations were conducted under atmospheric pressure, in air flow velocity of 4 m/s and temperature of 1 000 K. The spouting velocities of fuel jets are 50 m/s and 10 m/s, respectively. Calculated results revealed that the ignition point moves from the peripheral region in the upstream of a fuel jet to its top region with a decrease in the jet velocity. The ignition takes place in the fuellean layer, where mixture fraction is 0.01 and scalar dissipation rate is suitable for the ignition.
一般社団法人日本機械学会の論文
2003-05-25