Numerical Study on Thermodynamic Coupling Characteristics of Fluid Sloshing in a Liquid Hydrogen Tank for Heavy-Duty Trucks

The large-amplitude sloshing behavior of liquid hydrogen in a tank for heavy-duty trucks may have adverse effects on the safety and stability driving. With successful application field new energy vehicles, coupled thermodynamic performance during becomes more attractive. In this paper, three-dimensional numerical model is established to simulate coupling characteristics horizontal trucks. calculation results obtained by developed are good agreement with experimental data hydrogen. Based 3D model, under extreme acceleration, as well acceleration magnitude duration sloshing, numerically determined. simulation show that influence convective heat transfer fluid greatly strengthened, resulting decrease vapor temperature an increase temperature. particular, condensation caused promotes rapid reduction pressure tank. When 5 g 200 ms, maximum ullage 1550 Pa, growth force right wall 3.89 kN. Moreover, remarkable sloshing. or duration, there larger amplitude compared situation at g, reductions 9.46% 55.02%, forces 80.57% 99.53%, respectively, 2 0.5 g. Additionally, when contrast maximum-ullage-pressure drops 8.17% 21.62%, 71.80% 88.63%, 100 ms 50 respectively. These can provide reference design tanks