Inlet layout effects on the mixing performance with a novel mixing evaluation in a powder-fueled ramjet
(2022) In Fuel 327.- Abstract
Mixing process is crucial for ignition and combustion in powder-fueled ramjets. The mixing performance depends mainly on the inlet layout. In this study, the effects of four popular inlet layouts were investigated and were found to significantly influence the particle distribution. In this study, the Savitzky-Golay approach was used to handle large amounts of data on particles to obtain clear peaks and smooth curves. A novel mixing evaluation method was proposed for exploring the mixing enhancement mechanism further. The mixing performance analysis in the X-direction was conducted using the mixing quality index. The four-inlets scheme has similar mixing quality with the two-inlets scheme with an inlet angle of 180°, and higher than the... (More)
Mixing process is crucial for ignition and combustion in powder-fueled ramjets. The mixing performance depends mainly on the inlet layout. In this study, the effects of four popular inlet layouts were investigated and were found to significantly influence the particle distribution. In this study, the Savitzky-Golay approach was used to handle large amounts of data on particles to obtain clear peaks and smooth curves. A novel mixing evaluation method was proposed for exploring the mixing enhancement mechanism further. The mixing performance analysis in the X-direction was conducted using the mixing quality index. The four-inlets scheme has similar mixing quality with the two-inlets scheme with an inlet angle of 180°, and higher than the others. The qualitative and quantitative evaluations in the Y- and Z-directions were conducted using the percent frequency and the Kullback-Leibler divergence. The Kullback-Leibler divergence of the four-inlets scheme was more than 29.9% lower than the others. However, a considerable momentum loss and travelling time through entire turbulent eddy cannot be prevented in this scheme.
(Less)
- author
- Xu, Dequan ; Luo, Shibin ; Yang, Miao LU ; Feng, Yanbin and Song, Jiawen
- organization
- publishing date
- 2022-11-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Inlet layouts, Kullback-Leibler Divergence, Mixing, Powder-fueled ramjet
- in
- Fuel
- volume
- 327
- article number
- 125145
- publisher
- Elsevier
- external identifiers
-
- scopus:85133882563
- ISSN
- 0016-2361
- DOI
- 10.1016/j.fuel.2022.125145
- language
- English
- LU publication?
- yes
- id
- a7e5d570-59cb-4bc6-a1a5-5053f9ee32d2
- date added to LUP
- 2022-09-07 14:40:57
- date last changed
- 2022-09-07 14:40:57
@article{a7e5d570-59cb-4bc6-a1a5-5053f9ee32d2,
abstract = {{<p>Mixing process is crucial for ignition and combustion in powder-fueled ramjets. The mixing performance depends mainly on the inlet layout. In this study, the effects of four popular inlet layouts were investigated and were found to significantly influence the particle distribution. In this study, the Savitzky-Golay approach was used to handle large amounts of data on particles to obtain clear peaks and smooth curves. A novel mixing evaluation method was proposed for exploring the mixing enhancement mechanism further. The mixing performance analysis in the X-direction was conducted using the mixing quality index. The four-inlets scheme has similar mixing quality with the two-inlets scheme with an inlet angle of 180°, and higher than the others. The qualitative and quantitative evaluations in the Y- and Z-directions were conducted using the percent frequency and the Kullback-Leibler divergence. The Kullback-Leibler divergence of the four-inlets scheme was more than 29.9% lower than the others. However, a considerable momentum loss and travelling time through entire turbulent eddy cannot be prevented in this scheme.</p>}},
author = {{Xu, Dequan and Luo, Shibin and Yang, Miao and Feng, Yanbin and Song, Jiawen}},
issn = {{0016-2361}},
keywords = {{Inlet layouts; Kullback-Leibler Divergence; Mixing; Powder-fueled ramjet}},
language = {{eng}},
month = {{11}},
publisher = {{Elsevier}},
series = {{Fuel}},
title = {{Inlet layout effects on the mixing performance with a novel mixing evaluation in a powder-fueled ramjet}},
url = {{http://dx.doi.org/10.1016/j.fuel.2022.125145}},
doi = {{10.1016/j.fuel.2022.125145}},
volume = {{327}},
year = {{2022}},
}