Flow characteristics of coaxial-nozzle ejector for PEMFC hydrogen recirculation system

M Yu, C Wang, L Wang, X Wang - Applied Thermal Engineering, 2024 - Elsevier
Multi-nozzle ejectors are an effective method to overcome the conflicts between the ejector
fixed geometry and various system operating conditions in the ejector-driven proton …

Experimental analysis of an under-expanded jet interacting with a tangential flat plate: Flow visualizations and wall pressure statistics

R Camussi, MK Ahmad, S Meloni, E de Paola… - … Thermal and Fluid …, 2022 - Elsevier
A statistical characterization of the pressure load induced on a rigid surface by a high speed
compressible jet is carried out experimentally on a simple configuration consisting of a …

Large Eddy Simulation of a supersonic air ejector

S Croquer, O Lamberts, S Poncet, S Moreau… - Applied Thermal …, 2022 - Elsevier
This paper presents a study on the flow topology in the mixing chamber of a supersonic
ejector using Large Eddy Simulation (LES). To this end, a supersonic air ejector of squared …

Modal analysis of the laminar boundary layer instability and tonal noise of an airfoil at Reynolds number 150,000

M Sanjose, A Towne, P Jaiswal… - International …, 2019 - journals.sagepub.com
A direct numerical simulation of the flow field around a controlled-diffusion airfoil within an
anechoic wind-tunnel at 5° incidence and a high Reynolds number of 1.5× 10 5 is performed …

Spatiotemporal superresolution measurement based on POD and sparse regression applied to a supersonic jet measured by PIV and near-field microphone

Y Ozawa, T Nagata, T Nonomura - Journal of Visualization, 2022 - Springer
The present study proposed the framework of the spatiotemporal superresolution
measurement based on the sparse regression with dimensionality reduction using the …

Overview of the use of large-eddy simulations in jet aeroacoustics

AS Lyrintzis, M Coderoni - AIAA Journal, 2020 - arc.aiaa.org
The current state of the use of large-eddy simulations (LESs) in jet aeroacoustics is
reviewed. Various computational techniques are discussed, as well as methods to extend …

On the influence of uncertainty in computational simulations of a high-speed jet flow from an aircraft exhaust

FJ Granados-Ortiz, CP Arroyo, G Puigt, CH Lai… - Computers & …, 2019 - Elsevier
A classic approach to Computational Fluid Dynamics (CFD) is to perform simulations with a
fixed set of variables in order to account for parameters and boundary conditions. However …

On the influence of the nozzle exhaust initial conditions on the near field acoustic pressure

R Camussi, S Meloni, C Bogey - Acta Acustica, 2022 - acta-acustica.edpsciences.org
In this paper, the acoustic pressure generated in the near field of a single stream cold jet is
investigated. The analysis is focused on the effect of the initial conditions at the nozzle exit …

Broadband shock-associated noise modelling for high-area-ratio under-expanded jets

V Gryazev, A Kalyan, AP Markesteijn… - The Journal of the …, 2021 - pubs.aip.org
Broadband shock-associated noise (BBSAN) is an important component of supersonic jet
noise for jets at off-design conditions when the pressure at the nozzle exit is different from …

Some insights into the screech tone of under-expanded supersonic jets using dynamic mode decomposition

B Zang, US Vevek, TH New - Journal of Aerospace Engineering, 2021 - ascelibrary.org
Jet screech is an intense pure tone which has attracted decades of research interest due to
its possible detrimental effect on engineering structures. Its modes and closure mechanisms …