To study the heat transfer phenomenon in the complex space of small steel containment during the jet flow, the experiments and simulation were conducted with various jet inlet temperatures, velocities, and heights. The results show the flow field and temperature field are quite different from the large containment. There is no obvious thermal stratification phenomenon in small containment during the jet flow. The temperature in the lower part of the containment which is below the jet almost uniform. The temperature filed above the jet is more complex and depends on many factors. With the jet temperature increases, the temperature field above the jet increases obviously and the lower part increases slightly. The higher jet velocity, the higher initial kinetic energy, and the flow are easy to reach the dome and form a circulation.

为了研究射流中小钢制密闭空间中的传热现象，在各种射流入口温度，速度和高度下进行了实验和模拟。结果表明，流场和温度场与大型安全壳截然不同。在喷射过程中，在小密闭容器中没有明显的热分层现象。安全壳下部低于射流的温度几乎均匀。射流上方的温度更为复杂，取决于许多因素。随着射流温度的升高，射流上方的温度场明显增加，而下部则略有增加。较高的射流速度，较高的初始动能和流量易于到达圆顶并形成循环。