A numerical study on cryogenic sprays under different break-up regimes

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2026-07-01 Epub Date: 2026-02-05 DOI:10.1016/j.ijthermalsci.2026.110749

Mattia Pelosin , Francesco Duronio , Paolo Albertelli , Tommaso Lucchini , Zhifu Zhou , Jiameng Tian , Bin Chen

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引用次数: 0

Abstract

CFD simulation of cryogenic sprays represents a challenging task that requires an accurate modeling of the specific thermodynamic-induced primary break-up and evaporation rate. This work presents a computational approach based on the Eulerian–Lagrangian framework to simulate cryogenic flashing sprays. Dedicated models are included to account for flash boiling in atomization, nozzle flow and phase change processes, removing the need to tune conventional break-up models to describe the spray evolution when flash boiling atomizing takes place. The proposed methodology is validated using experimental measurements of local spray properties (velocity, droplet diameter and temperature). The proposed model accurately captures the characteristics of the different breakup regimes (mechanical, transient and fully flashing break-up) reproducing experimental data both in terms of spray morphology and the thermophysical evolution of the vapor and liquid phases.

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低温喷雾在不同破碎状态下的数值研究

低温喷雾的CFD模拟是一项具有挑战性的任务，需要对特定的热力学诱导的初级破裂和蒸发速率进行精确建模。这项工作提出了一种基于欧拉-拉格朗日框架的计算方法来模拟低温闪光喷雾。包括专用模型来解释雾化，喷嘴流动和相变过程中的闪沸，从而无需调整传统的破裂模型来描述发生闪沸雾化时的喷雾演变。采用局部喷雾特性（速度、液滴直径和温度）的实验测量验证了所提出的方法。所提出的模型准确地捕捉了不同破裂机制（机械、瞬态和完全闪光破裂）的特征，在喷雾形态和汽液相热物理演化方面再现了实验数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.