Effects of gas models on radiative heat transfer in the combustion chamber of a hydrogen gas turbine

X Zhang, Q Ai, W Wang - International Journal of Hydrogen Energy, 2023 - Elsevier
The development of hydrogen gas turbine is one of the most important ways to achieve
energy conversion, but hydrogen fuel affects the combustion temperature and gas …

TWO-WAY ANOVA ANALYSIS OF NOVEL ALBDF FUNCTIONS OBTAINED FOR H2O-CO2 GAS MIXTURES CONSIDERING VARIABLE MOLE FRACTION RATIOS IN …

LGP Rodrigues, FR Coelho, A Krummenauer… - Journal of Quantitative …, 2024 - Elsevier
In this study, three sets of absorption-line blackbody distribution functions (ALBDF) are
generated for H 2 O− CO 2 gas mixtures, computed directly from the effective absorption …

A wide-band based weighted-sum-of-gray-gases model for participating media: Application to H2O-CO2 mixtures with or without soot

RJC da Fonseca, GC Fraga, FR Coelho… - International Journal of …, 2023 - Elsevier
The presence of participating gases and soot in combustion processes often makes the
thermal radiation the main mechanism of heat transfer due to the elevated temperatures …

[HTML][HTML] Pressure-dependent weighted-sum-of-gray-gases models for heterogeneous CO2-H2O mixtures at sub-and super-atmospheric pressure

H Bordbar, FR Coelho, GC Fraga, FHR França… - International Journal of …, 2021 - Elsevier
The effect of total pressure of gas mixture is included in the development of new coefficients
for the weighted-sum-of-gray-gases model (WSGG). The WSGG formulation previously …

An extended weighted-sum-of-gray-gases model to account for all CO2‐H2O molar fraction ratios in thermal radiation

H Bordbar, GC Fraga, S Hostikka - International Communications in Heat …, 2020 - Elsevier
All published weighted sum of gray gases models (WSGGM) were either developed for a
limited number of molar fraction ratios, MR, or include MR as a variable in their formulations …

[HTML][HTML] Development of the Conditional Source-term Estimation (CSE) framework including finite-rate kinetics and non-prescribed radiation applied to a methanol …

AMK Abdalhamid, C Devaud, E Weckman - Fire Safety Journal, 2024 - Elsevier
The objective of this paper is to assess the new developments of Conditional Source-term
Estimation (CSE) framework with improved radiation modelling in large eddy simulation …

Application of absorption-line blackbody distribution functions for H2O-CO2 mixtures for the spectral integration of the radiative transfer equation with the SLW model

LGP Rodrigues, FR Coelho, FR Centeno… - … Communications in Heat …, 2024 - Elsevier
This study presents the generation and evaluation of absorption-line blackbody distribution
functions for mixtures (ALBDF-M) of CO 2 and H 2 O. These functions are employed in the …

Calculations of narrow-band transmissivity and the Planck mean absorption coefficients of CO2 based on high-resolution transmission molecular absorption, high …

S Zheng, M Zhang, M Na, Y Yang, Z Luo… - ES Energy & …, 2022 - espublisher.com
The radiation emission of CO 2 plays an important role in the radiative heat transfer of high-
temperature furnace and gas turbine, it is essential to estimate the radiative heat transfer of …

New gas radiation model of high accuracy based on the principle of weighted sum of gray gases

F Asllanaj, S Contassot-Vivier, GC Fraga… - Journal of Quantitative …, 2024 - Elsevier
Abstract The standard WSGG (Weighted Sum of Gray Gases) model is very fast and simple
but can lead to relatively high discrepancies in the computation of the radiative heat transfer …

A Compact WSGG Formulation to Account for Inhomogeneity of H2O–CO2 Mixtures in Combustion Systems

AHB Selhorst, GC Fraga… - Journal of Heat …, 2022 - asmedigitalcollection.asme.org
An alternative weighted-sum-of-gray-gases (WSGG) model is proposed with a single set of
constant pressure-based absorption coefficients that accounts for different mole fraction …