Simulation on the Temperature Drop Rule of Hot Oil Pipeline

摘要

The heat transfer equation of oil, pipe wall and soil, combining with the boundary condition, connectioncondition and initial conditions to be the differential equations which can simulate the temperature drop rule of hot oilpipeline. Then the numerical solution method is used to solve, constructed difference equations. By the gauss eliminationmethod, the temperature changing rule of hot oil pipeline after shutdown can be obtained, so we can determine the safetyshutdown time and the restart pressure.