Supercritical and transcritical turbulent injection processes: Consistency of numerical modeling

F Ries, A Sadiki - Atomization and Sprays, 2021 - dl.begellhouse.com
The present paper reviews recent achievements in numerical modeling of super-and
transcritical injection processes during the last 20 years. First, it provides an overview of …

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 …

Surface tension effects on cryogenic liquid injection dynamics in supercritical environment

JV Madana Gopal, R Morgan, G de Sercey… - Physics of …, 2023 - pubs.aip.org
The injection of cryogenic fluids into environments where the prevailing conditions are
supercritical in comparison to the critical point of the injected cryogenic fluid is encountered …

The effect of pressure on the hydrodynamic stability limit of premixed flames

A Attili, R Lamioni, L Berger, K Kleinheinz… - Proceedings of the …, 2021 - Elsevier
The effect of pressure on the hydrodynamic stability limits of lean methane–air premixed
flames is investigated with Direct Numerical Simulation based on multi-step chemistry and …

[HTML][HTML] Subgrid scale modeling considerations for large eddy simulation of supercritical turbulent mixing and combustion

U Unnikrishnan, H Huo, X Wang, V Yang - Physics of Fluids, 2021 - pubs.aip.org
This paper presents a systematic investigation of large eddy simulation (LES) and subgrid
scale (SGS) modeling with application to transcritical and supercritical turbulent mixing and …

An efficient modeling framework for wall heat flux prediction in rocket combustion chambers using non adiabatic flamelets and wall-functions

G Indelicato, PE Lapenna, A Remiddi… - International Journal of …, 2021 - Elsevier
In this work an efficient numerical framework for the prediction of wall heat loads in Liquid
Rocket Engine combustion chambers is presented. The proposed framework is based on a …

Contribution to the physical description of supercritical cold flow injection: The case of nitrogen

LB Magalhaes, ARR Silva, JMM Barata - Acta Astronautica, 2022 - Elsevier
While increased pressure and temperature contribute to an overall efficiency gain in the
mixing of propellants and oxidizers, characteristic of conditions in the combustion chambers …

Subgrid modeling of intrinsic instabilities in premixed flame propagation

PE Lapenna, R Lamioni, F Creta - Proceedings of the Combustion Institute, 2021 - Elsevier
This work is devoted to the investigation and subgrid-scale modeling of intrinsic flame
instabilities occurring in the propagation of a deflagration wave. Such instabilities, of …

[HTML][HTML] Intrinsic instability of lean hydrogen/ammonia premixed flames: Influence of Soret effect and pressure

F D'Alessio, C Matteucci, PE Lapenna, F Creta - Fuel Communications, 2024 - Elsevier
The addition of hydrogen in ammonia/air mixtures can lead to the onset of intrinsic flame
instabilities at conditions of technical relevance. The length and time scales of intrinsic …

Computational characterization of the temperature field in coaxial nitrogen injection under supercritical conditions

LB Magalhães, ARR Silva, JMM Barata - Acta Astronautica, 2023 - Elsevier
The modeling of fluids in the supercritical regime is addressed at conditions characteristic of
liquid-propelled rocket engines, whose increasing performance demands paved the way for …