Analytical instability theory of a liquid jet under a thermal field

R Qiao, K Mu, T Si - Acta Mechanica Sinica, 2023 - Springer
Linear temporal instability analysis of a liquid jet emerging into a stationary gas environment
under a radial thermal field is carried out in this work. The basic temperature profiles are …

[HTML][HTML] A Lagrangian-based flame index for the transported probability density function method

Z Lu, H Zhou, Z Ren, Y Yang, HG Im - Theoretical and Applied Mechanics …, 2022 - Elsevier
We propose a new flame index for the transported probability density function (PDF) method.
The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and …

Coupled zone-adaptive turbulence and combustion modeling of turbulent swirling premixed flames

Y Chen, T Yang, H Zhou, Y Mo, F Chen, Z Ren - Physics of Fluids, 2024 - pubs.aip.org
Adaptivity has emerged as a crucial element for capturing the multi-scale dynamics and,
therefore, effective turbulent flame simulations. This study explores the theoretical framework …

Modeling Edge Flame Propagation for Flame Particle Tracking in the Forced Ignition Process of Turbulent Nonpremixed Jet Flame

Y Chen, H Zhou, Z Ren - Combustion Science and Technology, 2023 - Taylor & Francis
To ensure safe and reliable operation, ignition performance in propulsion and power
devices needs to be thoroughly assessed. Reduced order models (ROMs) for ignition have …

LES Investigation of Kerosene Spray Flame Emission Characteristics in a Staged Combustor

S Zhang, L Zhang, P Fu, H Zhou, L Hou… - … Science and Technology, 2024 - Taylor & Francis
Staged combustion technology is widely applied in modern low-emission energy and power
systems. This study employs large eddy simulations (LES) to investigate the flame dynamics …

PeleLM-FDF large eddy simulator of turbulent reacting flows

A Aitzhan, S Sammak, P Givi… - Combustion Theory and …, 2023 - Taylor & Francis
A new computational methodology, termed 'PeleLM-FDF'is developed and utilised for high
fidelity large eddy simulation (LES) of complex turbulent combustion systems. This …

Consistent submodel coupling in hybrid particle/finite volume algorithms for zone-adaptive modelling of turbulent reactive flows

T Yang, Y Yin, H Zhou, Y Mo, Y Chen… - Combustion Theory and …, 2022 - Taylor & Francis
A hybrid particle/finite volume algorithm has been formulated for zone-adaptive modelling of
turbulent reactive flows to achieve both high fidelity in predictions and high computational …

An experimental study on the velocity fluctuations generated by the flow past fixed spheres

L Zhang, X Cheng, Z Zhou, Q Gao, X Shao - Journal of Hydrodynamics, 2022 - Springer
We perform a series of experiments to study the velocity fluctuations generated by the flow
past fixed spheres. Planar particle image velocimetry (PIV) is carried out to characterize the …

An investigation of subgrid mixing timescale modelling in LES of supersonic turbulent flames

J An, J Wei, J Zhanga, H Zhou, Z Ren - arXiv preprint arXiv:2306.10662, 2023 - arxiv.org
The predictive numerical simulation of supersonic turbulent combustion, in which the
turbulent intensity is high and the fuel/air mixture is near the flammability limit, remains …

[PDF][PDF] Analysis of sparse-Lagrangian two-phase coupling using direct numerical simulation

M Sontheimer - 2024 - d-nb.info
Liquid fuels are used extensively in industry and transportation, with spray combustion being
the predominant feature. At a short distance from the injection nozzle, the liquid jet is …