**4. Conclusions**

With the integrated use of the realizable k-ε turbulence model and the Eluerian model, numerical simulation of the leakage and diffusion process of the LNG storage tank was conducted. The conclusions were drawn as follows.


high concentration and long duration of methane, which should be the focus area of alarm prediction.

**Author Contributions:** Conceptualization, X.L. (Xue Li) and N.Z.; methodology, X.L. (Xuanya Liu); validation, W.H.; formal analysis, Q.Z.; resources, B.C.; data curation, L.K.; writing—original draft preparation, X.L. (Xue Li); writing—review and editing, X.L. (Xue Li), N.Z. and V.R.; project administration, N.Z. All authors have read and agreed to the published version of the manuscript.

**Funding:** This study was funded by National Key R&D Program of China [No. 2017YFC0805100]; The Natural Science Research Project of Higher Education Institutions of Jiangsu Province [No. 20KJB620004]; Scientific Research Project "Fire Risk Analysis of Petrochemical Enterprises" of Fire Department of Ministry of Public Security [No. 2016JSYJD04]; Tianjin Science and Technology Project [No. 2016ZX-CXSF0080]; Major projects supported by the Natural Science Research of Jiangsu Higher Education Institutions [No. 17KJA440001]; Open Project of Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology [No. CDYQCY202104].

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Conflicts of Interest:** The authors of this study have no conflict of interests or competing interests.
