Imperial College London
Alternate

Professor of Thermofluids Mechanical Engineering

Central Faculty, Office of the Provost

Associate Provost (Academic Promotions)
 
 
 
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Contact

 

p.lindstedt

 
 
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Location

 

613City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tian:2023:10.1016/j.proci.2022.09.015,
author = {Tian, L and Boyette, WR and Lindstedt, RP and Guiberti, TF and Roberts, WL},
doi = {10.1016/j.proci.2022.09.015},
journal = {Proceedings of the Combustion Institute},
pages = {2439--2447},
title = {Transported JPDF modelling and measurements of soot at elevated pressures},
url = {http://dx.doi.org/10.1016/j.proci.2022.09.015},
volume = {39},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Accurate measurements and modelling of soot formation in turbulent flames at elevated pressures form a crucial step towards design methods that can support the development of practical combustion devices. A mass and number density preserving sectional model is here combined with a transported joint-scalar probability density function (JDPF) method that enables a fully coupled scalar space of soot, gas-phase species and enthalpy. The approach is extended to the KAUST turbulent non-premixed ethylene-nitrogen flames at pressures from 1 to 5 bar via an updated global bimolecular (second order) nucleation step from acetylene to pyrene. The latter accounts for pressure-induced density effects with the rate fitted using comparisons with full detailed chemistry up to 20 bar pressure and with experimental data from a WSR/PFR configuration and laminar premixed flames. Soot surface growth is treated via a PAH analogy and soot oxidation is considered via O, OH and O2 using a Hertz-Knudsen approach. The impact of differential diffusion between soot and gas-phase particles is included by a gradual decline of diffusivity among soot sections. Comparisons with normalised experimental OH-PLIF and PAH-PLIF signals suggest good predictions of the evolution of the flame structure. Good agreement was also found for predicted soot volume statistics at all pressures. The importance of differential diffusion between soot and gas-phase species intensifies with pressure with the impact on PSDs more evident for larger particles which tend to be transported towards the fuel rich centreline leading to reduced soot oxidation.
AU  - Tian,L
AU  - Boyette,WR
AU  - Lindstedt,RP
AU  - Guiberti,TF
AU  - Roberts,WL
DO  - 10.1016/j.proci.2022.09.015
EP  - 2447
PY  - 2023///
SN  - 0082-0784
SP  - 2439
TI  - Transported JPDF modelling and measurements of soot at elevated pressures
T2  - Proceedings of the Combustion Institute
UR  - http://dx.doi.org/10.1016/j.proci.2022.09.015
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001021127700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://www.sciencedirect.com/science/article/pii/S1540748922003765
UR  - http://hdl.handle.net/10044/1/110182
VL  - 39
ER  -
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