Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
EXPERIMENTAL STUDY OF THE DIFFUSION FLAME LENGTH IN DIFFERENT CROSS-SECTIONS BURNERS IN MIXTURES OF NG-H2 DILUTED WITH CO2
Submission Author:
Diego Jhovanny Mariños Rosado , SP
Co-Authors:
Diego Jhovanny Mariños Rosado, João Carvalho, Miguel Huaraz Rodriguez, Andrés Armando Mendiburu Zevallos
Presenter: Diego Jhovanny Mariños Rosado
doi://10.26678/ABCM.COBEM2023.COB2023-0029
Abstract
Predicting aerodynamic parameters such as the length and shape of the diffusion flame ensure that the flames can remain accessible when they are subjected to various operating conditions. The objective of the present work is to determine the the empirical expressions of the diffusion flame length proposed by Roper for burners with circular, square and rectangular sections, and power regimes, where the diffusion flames are dominated by the momentum effects, the buoyancy effects, and in transition regime. The demonstrations of the expressions are carried out through two procedures. P1 analyzes the 17 compositions made up of 11 mixtures and 6 gases, compositions proposed in Roper's experimental work, while P2 analyzes 20 mixtures of NG-H2 diluted with CO2 proposed in this work. Finally, the results of the empirical expressions obtained in P1 and P2 were compared with the result of the theoretical expressions proposed by Roper in each cross-section and power regime through the Relative Error (RE) and Mean Relative Error (MRE). Four expressions were compared, being the maximum RE and MRE in the circular cross-section burner of 1.29% and 0.006% for P1, and 0.03% and 0.002% for P2, demonstrating good agreement.
Keywords
Buoyancy controlled, Cross-sections burners, Laminar difusion flame, Momentum controlled, Roper´s Theory
