バッフルプレート保炎形オイルバーナにおける噴霧挙動のシミュレーション

抄録

Fuel droplet characteristics in a flame holding region of an oil furnace (0.1MW) were investigated both in experiments and simulations. The size and shape of the recirculation flow under different conditions were examined and it was found that the simulation underestimated the size of the recirculation zone due to a κ-ε turbulent model. The size classification technique of fuel droplets was implemented in order to understand the followable characteristics of droplet in a high-turbulence region. A droplet under 30μm can follow the recirculating flow, but that over 50μm penetrates the recirculation zone due to large momentum. A conceptual flow illustration was demonstrated.