Numerical modeling of heat and mass transfer processes of liquefied natural gas in corrugated cryo-tank

The article discusses a promising model of an LNG fuel tank, which allows increasing the time of drainless storage by means of ensuring a constant degree of filling an isothermal vessel with the liquid phase of the fuel. A technological description of the method for maintaining an unchanged volume fraction of cryogenic fuel in the liquefied state with a corrugated vessel in the form of an axial bellows compensator is performed. The problem of the program calculation is formulated using the finite volume method, which enables describing the distribution of the physical parameters of the two-phase liquid-gas system with regard to the presence of heat influx to the walls of the corrugated vessel under consideration. The results of the numerical experiment of drainless storage of cryo-liquid without bleeding the product into the power supply system of an internal combustion engine are presented, the shortcomings of the analytical study of heat and mass transfer, and LNG hydrodynamics in a cryogenic isothermal tank are revealed.