{"title":"Analysis of the stabilization mechanisms and the NOx formation pathways of a partially premixed burner operated with pure hydrogen","authors":"Roberto Meloni , Giulia Babazzi , Luca Mazzotta , Domenico Borello","doi":"10.1016/j.applthermaleng.2025.127331","DOIUrl":null,"url":null,"abstract":"<div><div>The need of reliable Computational Fluid Dynamics (CFD) models able to predict the performance of pure hydrogen combustion is becoming strategic for the development of new burner designs for Gas Turbine (GT) combustor. The ability to correctly assess the locations where the flame gets stabilized can also facilitate the early detection of any potential issue during the combustor operation, helping in the definition of the hardware improvements. So, in this research paper, the results of a species-transport based model applied to a partially premixed burner operated at atmospheric pressure will be presented as validation stage. This burner exhibits an attached and a lifted flame configuration depending on the flow conditions it operates with. The two test points are numerically investigated revealing an excellent agreement in terms of velocity field and heat release rate prediction compared with the experimental measurements. Lastly, the time-averaged CFD solutions are used to retrieve information for a Chemical Reactor Network (CRN) model employed to quantify the NOx emission leveraging a chemical mechanism able to consider all the possible formation pathways. It is demonstrated that the presented methodology is able to reproduce the experimental measures with high fidelity allowing to capture the relationship between flame morphology and pollutant emission formation.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127331"},"PeriodicalIF":6.1000,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Thermal Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359431125019234","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
The need of reliable Computational Fluid Dynamics (CFD) models able to predict the performance of pure hydrogen combustion is becoming strategic for the development of new burner designs for Gas Turbine (GT) combustor. The ability to correctly assess the locations where the flame gets stabilized can also facilitate the early detection of any potential issue during the combustor operation, helping in the definition of the hardware improvements. So, in this research paper, the results of a species-transport based model applied to a partially premixed burner operated at atmospheric pressure will be presented as validation stage. This burner exhibits an attached and a lifted flame configuration depending on the flow conditions it operates with. The two test points are numerically investigated revealing an excellent agreement in terms of velocity field and heat release rate prediction compared with the experimental measurements. Lastly, the time-averaged CFD solutions are used to retrieve information for a Chemical Reactor Network (CRN) model employed to quantify the NOx emission leveraging a chemical mechanism able to consider all the possible formation pathways. It is demonstrated that the presented methodology is able to reproduce the experimental measures with high fidelity allowing to capture the relationship between flame morphology and pollutant emission formation.
期刊介绍:
Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application.
The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.