Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced Incandescence
Measuring the size distribution and temperature of high-temperature dispersed particles, particularly in-flame soot, holds paramount importance across various industries. Laser-induced incandescence (LII) stands out as a potent non-contact diagnostic technology for in-flame soot, although its effect...
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2024-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/3/634 |
| _version_ | 1797318557025959936 |
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| author | Junyou Zhang Juqi Zhang Xing Huang |
| author_facet | Junyou Zhang Juqi Zhang Xing Huang |
| author_sort | Junyou Zhang |
| collection | DOAJ |
| description | Measuring the size distribution and temperature of high-temperature dispersed particles, particularly in-flame soot, holds paramount importance across various industries. Laser-induced incandescence (LII) stands out as a potent non-contact diagnostic technology for in-flame soot, although its effectiveness is hindered by uncertainties associated with pre-determined thermal properties. To tackle this challenge, our study proposes a multi-parameter inversion strategy—simultaneous inversion of particle size distribution, thermal accommodation coefficient, and initial temperature of in-flame soot aggregates using time-resolved LII signals. Analyzing the responses of different heat transfer sub-models to temperature rise demonstrates the necessity of incorporating sublimation and thermionic emission for accurately reproducing LII signals of high-temperature dispersed particles. Consequently, we selected a particular LII model for the multi-parameter inversion strategy. Our research reveals that LII-based particle sizing is sensitive to biases in the initial temperature of particles (equivalent to the flame temperature), underscoring the need for the proposed multi-parameter inversion strategy. Numerical results obtained at two typical flame temperatures, 1100 K and 1700 K, illustrate that selecting an appropriate laser fluence enables the simultaneous inversion of particle size distribution, thermal accommodation coefficient, and initial particle temperatures of soot aggregates with high accuracy and confidence using the LII technique. |
| first_indexed | 2024-03-08T03:54:04Z |
| format | Article |
| id | doaj.art-cb0508b501354e45be16daee36503489 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T03:54:04Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-cb0508b501354e45be16daee365034892024-02-09T15:17:31ZengMDPI AGMaterials1996-19442024-01-0117363410.3390/ma17030634Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced IncandescenceJunyou Zhang0Juqi Zhang1Xing Huang2School of Energy and Environmental Engineering, University of Science and Technology, Beijing 100083, ChinaBeijing Institute of Electronic System Engineering, Beijing 100854, ChinaBeijing Institute of Spacecraft System Engineering, Beijing 100094, ChinaMeasuring the size distribution and temperature of high-temperature dispersed particles, particularly in-flame soot, holds paramount importance across various industries. Laser-induced incandescence (LII) stands out as a potent non-contact diagnostic technology for in-flame soot, although its effectiveness is hindered by uncertainties associated with pre-determined thermal properties. To tackle this challenge, our study proposes a multi-parameter inversion strategy—simultaneous inversion of particle size distribution, thermal accommodation coefficient, and initial temperature of in-flame soot aggregates using time-resolved LII signals. Analyzing the responses of different heat transfer sub-models to temperature rise demonstrates the necessity of incorporating sublimation and thermionic emission for accurately reproducing LII signals of high-temperature dispersed particles. Consequently, we selected a particular LII model for the multi-parameter inversion strategy. Our research reveals that LII-based particle sizing is sensitive to biases in the initial temperature of particles (equivalent to the flame temperature), underscoring the need for the proposed multi-parameter inversion strategy. Numerical results obtained at two typical flame temperatures, 1100 K and 1700 K, illustrate that selecting an appropriate laser fluence enables the simultaneous inversion of particle size distribution, thermal accommodation coefficient, and initial particle temperatures of soot aggregates with high accuracy and confidence using the LII technique.https://www.mdpi.com/1996-1944/17/3/634high temperature dispersed particlessoot aggregatesparticle thermometryinverse problemlaser-induced incandescenceLII |
| spellingShingle | Junyou Zhang Juqi Zhang Xing Huang Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced Incandescence Materials high temperature dispersed particles soot aggregates particle thermometry inverse problem laser-induced incandescence LII |
| title | Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced Incandescence |
| title_full | Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced Incandescence |
| title_fullStr | Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced Incandescence |
| title_full_unstemmed | Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced Incandescence |
| title_short | Simultaneous Inversion of Particle Size Distribution, Thermal Accommodation Coefficient, and Temperature of In-Flame Soot Aggregates Using Laser-Induced Incandescence |
| title_sort | simultaneous inversion of particle size distribution thermal accommodation coefficient and temperature of in flame soot aggregates using laser induced incandescence |
| topic | high temperature dispersed particles soot aggregates particle thermometry inverse problem laser-induced incandescence LII |
| url | https://www.mdpi.com/1996-1944/17/3/634 |
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