The flashing flow is a relevant multiphase phenomenon in many technical applications including nuclear safety analysis, which has been the subject of intense research for several decades. Numerical studies have evolved from one-dimensional to multi-dimensional. A variety of methods has been proposed, while a broad consensus does not exist yet. The present work aims to present an overview of available models and assess their limitations and perspectives by conducting an extensive literature survey. The final focus was put on recent progresses of computational fluid dynamics simulations. Some consensus on modelling interfacial slip, phase change mechanism and bubble size is identified. Since flashing scenarios often accompanying with high void fraction and broad bubble size range, a poly-disperse two-fluid model is recommended. Thermal phase change model is superior to pressure phase change, relaxation and equilibrium models for practical flashing problems, however incorporation of pressure effects is desirable. Major challenges comprise improving closure models for interphase transfer, bubble dynamics processes, interfacial area as well two-phase turbulence. For this purpose, high-resolution high quality experimental data are important, which are lacking in many cases. Considering that heterogeneous gas structures often exist in flashing flows, multi-field approaches able to handle different shapes of gas-liquid interface and including the shape effect in closure models are recommended for further study.

在包括核安全分析在内的许多技术应用中，闪蒸流是一个相关的多相现象，数十年来一直是深入研究的主题。数值研究已从一维发展到多维。已经提出了多种方法，但是还没有广泛的共识。本工作旨在通过进行广泛的文献调查来概述可用模型并评估其局限性和观点。最后的重点放在了计算流体动力学模拟的最新进展上。在界面滑移，相变机制和气泡尺寸建模方面已达成共识。由于闪烁的场景通常伴随着较高的空隙率和较大的气泡尺寸范围，因此建议使用多分散双流体模型。对于实际的闪蒸问题，热相变模型优于压力相变，张弛和平衡模型，但是希望合并压力效应。主要挑战包括改进用于相间转移，气泡动力学过程，界面面积以及两相湍流的闭合模型。为此，高分辨率高质量的实验数据很重要，而在许多情况下却缺乏这种数据。考虑到闪蒸流中经常存在非均质气体结构，建议采用能够处理气液界面不同形状并在封闭模型中包括形状效应的多场方法进行进一步研究。主要挑战包括改进用于相间转移，气泡动力学过程，界面面积以及两相湍流的闭合模型。为此，高分辨率高质量的实验数据很重要，而在许多情况下却缺乏这种数据。考虑到闪蒸流中经常存在非均质气体结构，建议采用能够处理气液界面不同形状并在闭合模型中包括形状效应的多场方法进行进一步研究。主要挑战包括改进用于相间转移，气泡动力学过程，界面面积以及两相湍流的闭合模型。为此，高分辨率高质量的实验数据很重要，而在许多情况下却缺乏这种数据。考虑到闪蒸流中经常存在非均质气体结构，建议采用能够处理气液界面不同形状并在闭合模型中包括形状效应的多场方法进行进一步研究。