Numerical Investigation for the Effect of Guide Panel on Heat Transfer from Steel Containment
In a nuclear reactor, the containment is the last barrier for the release of radioactivity during severe accident conditions. Containment material can be concrete or steel or steel-lined concrete. Steel containments have a high load bearing capacity and a high degree of leak tightness at higher pressures. In case of a severe accident, heat can be removed from the containment by a guide panel, placed in the annular gap between the steel and outer containment to increase heat transfer from the steel containment. Heat transfer from the containment depends on annulus air flow through the gap between steel containment and guide panel. The effects of the annulus air gap on the heat removal rate have been studied for a typical steel containment using COMSOL Multiphysics®.
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