Thermal prediction of transient two-phase flow in cryogenic transportation based on drift-flux model
Thermal prediction of transient two-phase flow in cryogenic transportation based on drift-flux model
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基于漂移通量模型的低温输送瞬态两相流热预测
DOI：
10.1016/j.ijheatmasstransfer.2021.121512
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发表时间：
2021-10
影响因子：
5.2
通讯作者：
Ishii Mamoru
中科院分区：
文献类型：
--
作者：
Wang Jiaojiao;Li Yanzhong;Wang Lei;Zhao Yang;Ishii Mamoru
低温瞬变输送的准确预测和有效的热管理对低温流体的安全高效利用具有重要意义。为预测非稳态低温输送过程，建立了一个耦合固液两相流和固体管瞬态导热的一维模型。采用漂移通量模型描述瞬态两相流动，采用交错网格有限体积法进行数值计算。通过大量的实验数据验证，该模型具有较宽的适用性。然后，对该系统的热工性能和压力波动现象进行了详细的研究。从节能角度考虑，建议采用间歇式制冷策略，以充分利用流体的显热。此外，压力波动是低温流体输送过程中的一种特殊物理现象，它给低温燃料的储存、装卸和运输带来了更高的挑战。
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.
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