Analysis of LNG Pipeline Insulation Structure Based on ANSYS Numerical Simulation

LNG pipeline insulation structure and calculation methods of insulation thickness were introduced.Static temperature distribution of LNG cryogenic long-distance pipeline was analyzed by using finite software.During calculation of pipeline cross-section temperature distribution,two methods including changing thermal conductivity with temperature and average thermal conductivity of the same insulation material were used to simulate the temperature distribution,separately.The results show that temperature distributions simulated by above two methods are similar,but heat flow densities are different.