制冷工质流动沸腾数值模拟中源项模型的研究进展

doi:10.16085/j.issn.1000-6613.2017-2176

摘要/Abstract

摘要： 作为描述流动沸腾过程物理现象的核心，源项在流动沸腾的数值模拟研究中起着至关重要的作用，主要体现在：①反映流动沸腾过程的传热、传质机理；②描述沸腾传热、两相流动特征；③影响数值计算稳定性。源项模型的准确性、适用性及稳定性对于制冷工质流动沸腾机理的数值研究具有重要意义。本文通过文献综述的方法，对现有源项模型进行了梳理。首先从源项在数值模拟中的角色入手，对现有针对流动沸腾数值模拟的源项模型进行归纳；其后分别从纯工质、混合工质两方面对源项模型的研究进展进行具体综述，分析了典型模型（如动力学模型、标量场模型、扩散模型等）的优缺点；同时对源项模型的典型验证方法进行系统总结，包括标准模型验证法、实验验证法。在此基础上，指出了流动沸腾数值模拟中源项模型的发展方向。

关键词: 气液两相流, 数值模拟, 源项, 模型, 制冷工质

Abstract: As the core of describing physical phenomena in flow boiling process, source term plays an important role in numerical simulation of flow boiling, which is mainly reflected in:①being derived from the heat and mass transfer mechanisms of the flow boiling process; ②describing boiling heat transfer, two-phase flow characteristics; ③influencing numerical calculation stability. It is of great importance to maintain accuracy, applicability and stability of the source models for numerical study on flow boiling mechanism of the refrigerant. Therefore, the existing source models through the literature review method were sorted out in this paper. Firstly, the source models were reviewed for the numerical simulation of flow boiling according to the roles of source term in the numerical simulation. Then, the research progress of the source models was presented for the pure and mixed working fluids respectively. The pros and cons of classical models such as kinetic model, scalar field model, diffusion model were discussed. Thereafter, typical verification methods of these source models were systematically summarized from the aspects of standard model and experimental verification. On these bases, the development direction of source models for numerical simulation of flow boiling was clearly pointed out.

Key words: gas-liquid flow, numerical simulation, source term, model, refrigerant

中图分类号:

邵亚伟, 邓帅, 苏文, 赵力, 卢培, 赵东鹏. 制冷工质流动沸腾数值模拟中源项模型的研究进展[J]. 化工进展, 2018, 37(08): 2892-2903.

SHAO Yawei, DENG Shuai, SU Wen, ZHAO Li, LU Pei, ZHAO Dongpeng. Research progress on source models for numerical simulation of flow boiling of refrigerant[J]. Chemical Industry and Engineering Progress, 2018, 37(08): 2892-2903.

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