Anti-rollover effect of convective LNG currents inside cargo tanks
Object and purpose of research. The paper studies a new way to combat rollover (a negative phenomenon arising when a cargo tank is replenished with a new portion of LNG with different physical parameters). The purpose of this study is to numerically investigate the efficiency of the new method of rollover suppression inside cargo tanks during LNG transportation and storage.Materials and methods. The calculations were based on the fundamental laws of hydrodynamics and heat transfer, including the f -model of turbulence developed by V. Pavlovsky and successfully applied to solution of internal hydrodynamic problems. Main results. The paper suggests a method for LNG mixing inside the tank using the kinetic energy of the LNG itself, i.e. of its convective flows. The calculations yielded the mixing rates for the fluid in a cylindrical tank fitted with special shields. Conclusion. The totality of the obtained results gives satisfactorily proves this method to be viable, as well as opens broad prospects for its experimental confirmation, which will contribute to making this kind of fuel more attractive economically.