Accurate prediction as well as effective thermal management of transient cryogenic transportation is of great importance to the safe and high-efficiency utilization of cryogenic fluids. To predict the unstable cryogenic transportation process, a one-dimensional model coupling two-phase flow with transient heat conduction of solid tube is developed in this study. The transient two-phase flow is described by a drift-flux model, and a finite volume method (FVM) with staggered grid mesh is adopted for numerical calculation. Verified by a lot of experimental data, the proposed model shows its applicability in a wide range of conditions. Then, thermal performance and pressure surge phenomenon are investigated in detail. The intermittent chill-down strategy is recommended to take full use of the sensible energy of fluid from the perspective of energy saving. Besides, the pressure surge is verified as a special physical phenomenon in cryogenic fluids transportation process, which brings higher challenges to the storage, handling and transport of cryogenic fuels.

瞬态低温运输的准确预测以及有效的热管理对于低温流体的安全高效利用具有重要意义。为了预测不稳定的低温输运过程，本研究建立了两相流与固体管瞬态热传导耦合的一维模型。瞬态两相流采用漂移-通量模型描述，数值计算采用网格交错的有限体积法(FVM)。通过大量的实验数据验证，所提出的模型显示了其在广泛条件下的适用性。然后，详细研究了热性能和压力波动现象。从节能的角度，建议采用间歇性冷却策略，以充分利用流体的显能。此外，压力波动被证实是低温流体输送过程中的一种特殊物理现象，这对低温燃料的储存、装卸和运输提出了更高的挑战。