Experiments were carried out in a simplified drop system,which can provide a simulated reduced gravity period of about 2.2 s and a residual gravity of 10-2,g0.The transitional behaviors of flame shape,average flame lumi-nance,flame temperature and combustion rate of fuel sample under normal to reduced gravity condition have been investigated.The results show that flame transforms from diffusive turbulent flame under normal gravity to laminar flame under reduced gravity.Flame height,average flame luminance,flame temperature and combustion rate of fuel decrease under reduced gravity.Because of the residual air movement induced by combustion under normal grav-ity,the rise in upwind flame temperature,luminance and combustion rate has been observed,which may make the fires under reduced gravity more complicated and hazardous.
修改评论