The Influence of Thermal Stratification on BLEVE in LPG Vessel
摘要
The stratification layer not only makes pressure increase faster, but also influences the process of possible BLEVE. It is because higher temperature means that greater numbers of bubbles are formed more rapidly upon sudden depressurization. As the liquid temperature approaches the superheat limit, the nucleation rate changes greatly. So when BLEVE is studied, it is improper to ignore the thermal stratification within liquid content. In this paper, thermal stratification is modeled, and its influence on BLEVE is analyzed. At the same crack pressure, less energetic response would be expected when stratification is included than when not considered. Under different heat condition, stratification layer may vary. As a result, the trace of the rebound pressure is different.