Validation of a Two-Phase CFD Air/Mist Film Cooling Model With Experimental Details—Part II: Computational Model Validation

Author:

Abdelmaksoud Ramy1,Wang Ting1,Zhao Lei1

Affiliation:

1. The University of New Orleans Energy Conversion and Conservation Center, , New Orleans, LA 70148

Abstract

Abstract In this Part II of the paper, a numerical study has been performed to validate the multiphase computational fluid dynamics (CFD) model by comparing its results to the experimental data of an air/mist film cooling study presented in Part I. The complete experimental test section was simulated including all the details such as five holes, side walls effect, partially opened top wall, the conjugate bottom wall, the initial droplet distributions from the actual data, and the long boundary layer developing region upstream of the cooling holes. The effects of different particle distributions, the breakup and coalescence models, and the conjugate wall on the adiabatic film cooling effectiveness were investigated. The multiphase CFD model employs an Eulerian–Lagrangian approach. The Eulerian method is used for the continuous phase including air and water vapor, and the Lagrangian method in terms of the discrete phase model (DPM) is used to simulate the dispersed phase of liquid droplets in a continuous phase of air–water vapor mixture. The overall consistency between the computational prediction and experimental data is within 0.2% for the air-only case and 7% for the mist case. The results showed that considering the wall using the conjugate heat transfer technique significantly provided better agreement with the experimental data than without including the wall. The non-uniform particle distribution provided better agreement with the experimental results near the film cooling hole exit.

Publisher

ASME International

Subject

Fluid Flow and Transfer Processes,General Engineering,Condensed Matter Physics,General Materials Science

Reference28 articles.

1. A Review of Shaped Hole Turbine Film-Cooling Technology;Bunker;ASME J. Heat Transfer-Trans. ASME,2005

2. Gas Turbine Film Cooling;Bogard;J. Propul. Power,2005

3. Film Cooling of a Gas Turbine Blade;Ito;J. Eng. Power,1978

4. Recent Developments in Turbine Blade Internal Cooling;Han;Ann. N. Y. Acad. Sci.,2001

5. Heat Flux Measurement for a Rotor of a Full Stage Turbine. Part I: Time Averaged Results;Dunn;ASME J. Turbomach.,1986

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3