海底天然气管道泄漏数值模拟

摘要

Aiming at the unsteady leakage process of submarine natural gas pipeline, the relevant boundary conditions were given, then VOF model was used to simulate it ,and the transient process of the leakage natural gas rising from“hemisphere”form,“drop”form to“sphere”form was observed, the volume fraction distribution characteristics during the process of natural gas rising were obtained, which can provide some theory references to know the submarine natural gas pipeline leakage process and implement emergency measures.%　　针对海底天然气管道非稳态泄漏过程，给定相应边界条件，采用 VOF 模型进行数值模拟，观察到了泄漏天然气气团由“半球”形、“水滴”形到“球”形的过渡过程，得到了天然气在水中上升过程的体积分数分布特性。为了解海底天然气管道泄漏过程和实施应急措施提供了一定的理论参考。