MODELING OF HEAT AND MASS TRANSFER PROCESSES IN THE CRYOGENIC RESERVOIR OF LONG-TERM STORAGE LIQUEFIED NATURAL GAS

Author(s):  E.S. Soldatov, Joint-stock company «Linde Gas Rus», Balashikha, Russia, volshebnoekoltso@mail.ru

Issue:  Volume 46, № 1

Rubric:  Computer simulation history

Annotation:  The problem of temperature and component stratification in a long-term storage cryogenic reservoir with liquefied natural gas is considered. A formal formulation of the problem of mathematical modeling of heat and mass transfer processes and the sequence of calculation of estimates of the temperature field parameters in a cryogenic tank during long-term storage with a closed gas discharge valve are presented. Modern numerical methods of solving the system of equations of heat and mass transfer and continuous medium hydrodynamics using the newest software systems, in particular with the use of energy equations and turbulence models, are described. The results of estimating the temperature stratification occurring during the process of long-term storage of liquefied natural gas using a semi-empirical turbulence model are presented. The data obtained are applicable for the specified assessment of the thermal working load of the refrigeration unit for the natural gas vapor recondensation system.

Keywords:  liquefied natural gas, heat transfer in a cryogenic tank, long-term storage of liquefied natural gas, modeling of heat and mass transfer processes in a cryogenic tank, model of a temperature field in a cryogenic tank.

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