Propagation of premixed flames in the presence of Darrieus–Landau and thermal diffusive instabilities

F Creta, PE Lapenna, R Lamioni, N Fogla… - Combustion and …, 2020 - Elsevier
We study the propagation of premixed flames, in the absence of external turbulence, under
the effect of both hydrodynamic (Darrieus–Landau) and thermodiffusive instabilities. The …

Characterization of pseudo-boiling in a transcritical nitrogen jet

PE Lapenna - Physics of Fluids, 2018 - pubs.aip.org
This study is devoted to the investigation, by means of direct numerical simulation, of the
interaction between turbulent motions and the pseudo-boiling process. To this end, fully …

Direct numerical simulation of transcritical jets at moderate reynolds number

PE Lapenna, F Creta - AIAA Journal, 2019 - arc.aiaa.org
This paper presents a direct numerical simulation dataset comprising four transcritical
nitrogen jets characterized by the same Reynolds number and different pressures, ranging …

Modeling the equations of state using a flamelet approach in LRE-like conditions

PE Lapenna, G Indelicato, R Lamioni, F Creta - Acta Astronautica, 2019 - Elsevier
In this study, we investigate the averaging and modeling of real fluid equations of state (EoS)
used in the context of numerical simulations of flows under conditions relevant to liquid …

[HTML][HTML] A priori analysis for high-fidelity large-eddy simulation of wall-bounded transcritical turbulent flows

M Bernades, L Jofre, F Capuano - The Journal of Supercritical Fluids, 2024 - Elsevier
Transcritical turbulent flows are governed by the compressible Navier–Stokes equations
along with a real-gas equation of state. Their computation is strongly susceptible to …

Large scale effects in weakly turbulent premixed flames

PE Lapenna, R Lamioni, G Troiani, F Creta - Proceedings of the …, 2019 - Elsevier
In this study we numerically investigate large scale premixed flames in weakly turbulent flow
fields. A large scale flame is classified as such based on a reference hydrodynamic …

[HTML][HTML] A-posteriori analysis of a data-driven filtered wrinkled flamelet model for thermodiffusively unstable premixed flames

PE Lapenna, A Remiddi, D Molinaro, G Indelicato… - Combustion and …, 2024 - Elsevier
State-of-the-art turbulent combustion models do not account for the effects of intrinsic flame
instabilities, which are known to have a non-negligible effect, under technically relevant …

Data-driven subfilter modelling of thermo-diffusively unstable hydrogen–air premixed flames

PE Lapenna, L Berger, A Attili, R Lamioni… - … Theory and Modelling, 2021 - Taylor & Francis
This article is dedicated to Moshe Matalon on the occasion of his 70th birthday, for his
numerous contributions to the field of combustion and, in particular, to the rich and varied …

Numerical Investigation of High Pressure CO2-Diluted Combustion Using a Flamelet-based Approach

G Indelicato, PE Lapenna, R Concetti… - Combustion Science …, 2020 - Taylor & Francis
Direct-fired oxy-fuel combustion as a heat source is utilized in supercritical carbon dioxide
(sCO2) power cycles, such as the Allam cycle, which has shown promise in delivering …

Flame induced flow features in the presence of Darrieus-Landau instability

R Lamioni, PE Lapenna, G Troiani, F Creta - Flow, Turbulence and …, 2018 - Springer
The onset of hydrodynamic or Darrieus-Landau (DL) instability can largely impact on
premixed flame morphology, turbulent flame speed and induced flow field. In this work, we …