| DOI | Trouver le DOI : https://doi.org/10.1088/1361-6501/ac370b |
|---|
| Auteur | Rechercher : Escudero, F.Identifiant ORCID : https://orcid.org/0000-0001-6919-3451; Rechercher : Cruz, J. J.Identifiant ORCID : https://orcid.org/0000-0001-8789-3080; Rechercher : Liu, F.1; Rechercher : Fuentes, A. |
|---|
| Affiliation | - Conseil national de recherches Canada. Centre de recherche en métrologie
|
|---|
| Bailleur de fonds | Rechercher : Comisión Nacional de Investigación Científica y Tecnológica; Rechercher : Fondo Nacional de Desarrollo Científico y Tecnológico |
|---|
| Format | Texte, Article |
|---|
| Résumé | This work presents a layer-peeling (LP) algorithm to correct the signal trapping effect in planar laser-induced incandescence (LII) measurements of soot volume fraction. The method is based on measurements of LII signals captured by an intensified CCD camera at a series of parallel planes across a diffusion flame. A method based on presumed function (PF) of soot volume fraction is also proposed for comparison. The presented methods are numerically tested based on synthetic LII signals emitted from a simulated axisymmetric laminar diffusion flame using the CoFlame code. Numerical results showed that the LP method is able to correct the signal trapping effect, even for fairly large optical thicknesses and in a wide range of detection wavelengths. The correction decreases the relative errors induced by neglecting the trapping effect considerably. The signal trapping effect correction is less important for the determination of integrated soot quantities such as radially integrated soot volume fraction or total soot loading. Planar LII measurements were carried out and calibrated in order to test the method experimentally in a coflow flame. The LP, PF and a simplified analytical (SA) model were compared. The results indicate that the differences in soot volume fraction of 1 ppm or about 15% are obtained in zones of maximum soot loading of 6.5 ppm when the trapping effect is accounted for. Also, the LP and SA methods were found computationally efficient and accurate compared to the PF method. Although the study was performed in a canonical laminar axisymmetric flame, the proposed method can be applied to any statistically steady 3D flame. |
|---|
| Date de publication | 2021-11-22 |
|---|
| Maison d’édition | IOP Publishing Ltd |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | ec2208eb-e7ff-43d9-b400-b1e5590da97b |
|---|
| Enregistrement créé | 2023-07-04 |
|---|
| Enregistrement modifié | 2023-07-04 |
|---|
