1
|
Xu K, He C, Yin J, Qin C, Ruan S, Shi Y, Liu Y, Zhang L. Relevance of soot formation characteristics to equivalence ratio and CO2 addition of acetylene flame. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
2
|
Zhang J, Li S, Qi H. A robust trivariate approach for characterizing the primary particle size distribution of soot aggregates using time-resolved laser-induced incandescence. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
4
|
Sutcu E, Doner N, Liu F, Ercetin U, Sen F, Yon J, Morán J, Fuentes A. Morphological and radiative characteristics of soot aggregates: Experimental and numerical research. Sci Rep 2020; 10:411. [PMID: 31941934 PMCID: PMC6962357 DOI: 10.1038/s41598-019-57045-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 12/20/2019] [Indexed: 11/09/2022] Open
Abstract
The study is aimed at investigating the radiative properties of soot aggregates at determined morphological features using both experimental and numerical methods. Soot aggregates collected from air monitoring stations in different locations were examined. The locations were divided into three groups. The first group (Case 1) included the coastal and industrial zone; the second group (Case 2) consisted of small and large cities; and the third group (Case 3) included areas in the neighbourhood of thermal power plants. The absorbance measurements of the soot aggregates were conducted in the visible and near-infrared spectra, and in the wavelength range of 2 μm-20 μm. The samples were characterised by scanning electron microscopy (SEM), and their radiative properties were assessed using the discrete dipole approximation (DDA) for numerically generated fractal aggregates with two popular refractive indices of m = 1.60 + 0.60i and m = 1.90 + 0.75i. Calculations were conducted for primary particles in point-contact, with 20% overlapping and with a coating (50% and 80%) in the wavelength range of 0.4–1.064 μm. The largest measured absorbance values in both the winter and summer seasons were found in the cities in Case 1, and the x-ray diffraction (XRD) phases of the samples were also presented. The radiative properties of the aggregates, i.e., Df = 1.78 and kf = 2.0 representing Case 3, were close to those of aggregates with Df = 2.1 and kf = 2.35 representing Case 1 in the investigated wavelength range. The calculated radiative properties and the experimental absorbance measurements for point-contact and overlapping situations showed the same trend in the examined wavelengths. The absorbance properties of the samples of coastal and industrial zones were distinctively higher than others in the wavelength range of 2 μm-20 μm which could be attributed to the PAH effects.
Collapse
Affiliation(s)
- Ezgi Sutcu
- Dumlupinar University, Engineering Faculty, Mechanical Engineering Department, 43270, Kutahya, Turkey
| | - Nimeti Doner
- Gazi University, Engineering Faculty, Mechanical Engineering Department, 06570, Ankara, Turkey.
| | - Fengshan Liu
- Black Carbon Metrology, Measurement Science and Standards, National Research Council, Ottawa, Ontario, K1A 0R6, Canada
| | - Umran Ercetin
- Dumlupinar University, Engineering Faculty, Mechanical Engineering Department, 43270, Kutahya, Turkey
| | - Fatih Sen
- Sen Research Group, Biochemistry Department, Dumlupinar University, 43270, Kutahya, Turkey.
| | - Jérôme Yon
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, CORIA, 76000, Rouen, France
| | - Jose Morán
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, CORIA, 76000, Rouen, France.,Departamento de Industrias, Universidad Técnica Federico Santa María, Av. España 1680, Casilla, 110-V, Valparaíso, Chile
| | - Andrés Fuentes
- Departamento de Industrias, Universidad Técnica Federico Santa María, Av. España 1680, Casilla, 110-V, Valparaíso, Chile
| |
Collapse
|