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气液混输的本质是多相多组分非稳态流动、传热与传质耦合的复杂过程,在气液混输管道中,流体介质除了与管壁存在能量和动量的传递外,在两相相界面上亦存在动量、能量及质量的传递。通过总结气液两相流数学模型相关研究成果,分别从一维与高维、稳态与非稳态角度,分析了未充分考虑传热与传质影响的气液两相管流数学模型的研究现状和局限性,评述了考虑传热和相变耦合影响下的气液两相流数学模型研究进展。最后指出,耦合传热和相变理论的相界面追踪、气液相界面复杂作用机理对传热传质的影响、复杂气液两相流型下的湍流模拟、气液两相平衡与非平衡相变机理以及开发用于求解气液两相流高维数学模型的快速高效算法,是该领域今后研究的关键问题和主要发展方向。
The nature of gas-liquid mixing is the complicated process of multi-phase multi-component unsteady flow, heat transfer and mass transfer. In the gas-liquid mixing pipelines, except for the transfer of energy and momentum between the fluid medium and the pipe wall, Momentum, energy and mass transfer also exist on the interface of two phases. By summarizing the related research results of the mathematical model of gas-liquid two-phase flow, the mathematical model of gas-liquid two-phase flow in pipelines with insufficient consideration of heat and mass transfer is analyzed from the aspects of one-dimension and high-dimension, steady state and unsteady state Research status and limitations, and reviewed the research progress of mathematical model of gas-liquid two-phase flow under the influence of heat transfer and phase change coupling. Finally, it is pointed out that the phase-interface tracking of coupled heat transfer and phase transition theory, the complex mechanism of gas-liquid interface on the heat and mass transfer, the simulation of turbulent flow under complex gas-liquid two-phase flow pattern, the equilibrium and non-equilibrium The mechanism of phase transition and the development of a fast and efficient algorithm for solving high-dimensional mathematic models of gas-liquid two-phase flow are the key issues and main directions of future research in this field.