关键词: 海底埋地管道, 泄漏, 数值模拟, 温度场, 压力场

Abstract: Coupling simulation was used in the buried seabed pipeline, to analyze the temperature field and stress field on the different leakage points. When the oil spilled to the sea mud area, it had the different influences on temperature field of the sea of mud, and there was a regular of distribution. When the leakage point was closed to the left and right sides of the pipe affected by gravity，the isotherm of leakage point moved down，the offside of leakage point moved up，the temperature field presented asymmetric distribution. When the leakage at the bottom of the pipes pressure field distribution was solely discussed, the isobar's distribution was symmetrical on both sides of the pipe, and gradually spread to the sides and top, and diffusion velocity had certain distinction with the leakage of buried pipe.

Key words: The undersea buried pipe, Leakage, Numerical simulation, Temperature field, Stress field 