氢气泄漏模型研究进展

Research Progress on Hydrogen Leakage Models

摘要:

总结国内外氢气泄漏基础理论模型，从射流结构、扩散羽流、浓度积累等方面阐述了氢气泄漏的特性，并介绍氢气泄漏在数值模拟方面的最新研究成果。针对氢气缓慢泄漏的浮力射流模型研究较为完善，但针对氢气欠膨胀射流模型的研究并不完善。数值模拟方法十分适合研究复杂场景下的氢气泄漏扩散规律，但仍需更多实验数据支撑。基于先进机器学习技术开发的氢气泄漏预测模型显示出了较大的应用前景。未来需进一步发展氢气泄漏模型，拓宽模型适用场景并提升预测精度。

Abstract:

The basic theoretical models established by domestic and foreign researches on hydrogen leakage are reviewed. The characteristics of hydrogen leakage are described from jet structure， diffusion plume， concentration accumulation， etc.， and the latest research results on hydrogen leakage based on numerical simulation are introduced. The buoyancy jet models under slow hydrogen leakage are developed. However， model prediction under under-expanded hydrogen jet conditions presents great challenges. The numerical simulation method is very suitable for studying the diffusion law of hydrogen leakage in complex scenarios， but more experimental data are needed. The hydrogen prediction models based on advanced machine learning technology show great application prospect. In the future， hydrogen leakage models need to be further developed to broaden the applicable scenarios and improve the prediction accuracy.