A study of droplet evaporation coupling model based on Eulerian method

IF 0.3 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria Pub Date : 2021-01-25 DOI:10.23967/J.RIMNI.2021.01.001

Yan Tan, J. Shang, Yuyou Zhan

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引用次数: 0

Abstract

Research on engine icing is a hot topic among the world. Different from the aircraft wing or airframe icing, the evaporation phenomenon in the internal flow field has a great influence on the engine icing. Moreover, the thermodynamic coupling between droplets and flow field is not available in current particle trajectory calculations, or only for one-dimensional situation. Therefore, a three-dimensional droplet trajectory calculation model based on Eulerian method is used to demonstrate the thermodynamic coupling between droplets and flow field. The model was verified by NRC small engine icing wind tunnel test data and the flow field evolution is obtained which cannot be obtained by the one-dimensional coupling model. In the meanwhile, the effects of different initial LWC, relative humidity and MVD on the internal flow evaporation were studied, and the trends of droplets and flow field affected by evaporation were obtained. The numerical method in this paper can provide guidance for the subsequent research on engine icing

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基于欧拉法的液滴蒸发耦合模型研究

发动机结冰问题是国内外研究的热点问题。与飞机机翼或机身结冰不同，发动机内部流场的蒸发现象对发动机结冰有很大的影响。此外，在目前的粒子轨迹计算中，液滴与流场之间的热力学耦合是不可用的，或者只能用于一维情况。因此，采用基于欧拉法的三维液滴轨迹计算模型来表征液滴与流场之间的热力学耦合。用NRC小型发动机结冰风洞试验数据对模型进行了验证，得到了一维耦合模型无法得到的流场演化过程。同时，研究了不同初始LWC、相对湿度和MVD对内部流动蒸发的影响，得到了液滴和流场受蒸发影响的变化趋势。本文的数值方法可以为后续发动机结冰问题的研究提供指导

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

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria 工程技术-工程：综合

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： International Journal of Numerical Methods for Calculation and Design in Engineering (RIMNI) contributes to the spread of theoretical advances and practical applications of numerical methods in engineering and other applied sciences. RIMNI publishes articles written in Spanish, Portuguese and English. The scope of the journal includes mathematical and numerical models of engineering problems, development and application of numerical methods, advances in software, computer design innovations, educational aspects of numerical methods, etc. RIMNI is an essential source of information for scientifics and engineers in numerical methods theory and applications. RIMNI contributes to the interdisciplinar exchange and thus shortens the distance between theoretical developments and practical applications.