Abstract:Taken a B-type independent tank Liquefied Natural Gas (LNG) carrier for example, in accordance with the related requirements of International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code), USCG Code, and classification society rules, the calculation method and flow of temperature field, value of thermal conductivity and convection coefficient of material, and temperature field distribution of longitudinal member, transverse stiffening frame, and transverse bulkhead of the carrier are studied. The temperature field distribution and steel grade selection under environmental condition of IGC Code and USCG Code of the carrier are analyzed, and the LNG daily evaporation rate calculation of the carrier is studied, which can obtain the meaningful results for the temperature field analysis and application of independent tank LNG carrier.