Universidad de las Américas, Puebla, Mexico.
J Hazard Mater. 2011 Dec 15;197:104-8. doi: 10.1016/j.jhazmat.2011.09.057. Epub 2011 Sep 21.
The convection heat transfer phenomenon in vertical jet fires was experimentally analyzed. In these experiments, turbulent propane flames were generated in subsonic as well as sonic regimes. The experimental data demonstrated that the rate of convection heat transfer increases by increasing the length of the flame. Assuming the solid flame model, the convection heat transfer coefficient was calculated. Two equations in terms of adimensional numbers were developed. It was found out that the Nusselt number attains greater values for higher values of the Rayleigh and Reynolds numbers. On the other hand, the Froude number was analyzed only for the subsonic flames where the Nusselt number grows by this number and the diameter of the orifice.
对垂直射流火灾中的对流传热现象进行了实验分析。在这些实验中，亚音速和音速条件下产生了湍流丙烷火焰。实验数据表明，随着火焰长度的增加，对流传热速率增加。假设固体火焰模型，计算了对流传热系数。提出了两个无量纲数的方程。发现努塞尔数随着瑞利数和雷诺数的增加而增大。另一方面，仅对亚音速火焰分析了弗劳德数，其中努塞尔数随该数和孔口直径的增大而增大。
