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Din sökning på "2025" gav 24790 sökträffar

LES of Supersonic Combustion in a Mach 2 Cavity-Based Model Scramjet Combustor with Conjugate Heat Transfer and Radiative Heat Transfer

Here we report on reactive Large Eddy Simulations (LES) of flow and combustion in the US Air Force Research Laboratory Research Cell 19 cavity-based scramjet combustor. This case involves combustion of ethylene (C2H4) injected into a cavity from its slanted trailing edge. It has previously been studied experimentally with multiple techniques including particle image velocimetry, shadowgrapy, OH pl

Experiments and Large Eddy Simulation of Supersonic Combustion in the Small-Scale Flight Experiment

Supersonic combustion is a critical area of research for advancing high-speed flight technologies, particularly for the development of scramjet engines for hypersonic vehicles. This study employs Finite Rate Chemistry (FRC) Large Eddy Simulation (LES) together with different experimental techniques to study the supersonic flow and thermochemical processes in the Small Scale Flight Experiment (SSFE

Improving neural network efficiency with multifidelity and dimensionality reduction techniques

Design problems in aerospace engineering often require numerous evaluations of expensive-to-evaluate high-fidelity models, resulting in prohibitive computational costs. One way to address the computational cost is through building surrogates, such as deep neural networks (DNNs). However, DNNs may only be an effective surrogate when sufficient evaluations of the high-fidelity model are required suc

Characterization of Non-Wide-Sense Stationarity for Distributed Massive MIMO Channels

Distributed massive multiple-input multiple-output (MIMO) communication is envisioned as one of the key paradigms of future MIMO systems. To investigate non-wide-sense stationarities (non-WSSs) in distributed massive MIMO channels, this paper first presents an indoor channel measurement campaign, where distributed arrays with a total of 128 elements were implemented. Then relying on the correlatio

IEA SHC Task 70 / EBC Annex 90 “Low Carbon, High Comfort Integrated Lighting” -Updates of Subtask D

Achieving the dual goals of increasing visual comfort and well-being in the built environment while minimizing resource demand is a significant challenge. Since 2023, Subtask D “Case Studies” of IEA SHC Task 70 / EBC Annex 90 “Low Carbon, High Comfort Integrated Lighting,” has been addressing this challenge head-on. Subtask D aims to advance the wide-scale adoption of environmentally performing da

Summer scholarships and preparatory research school 2025

The Research Studies Board announces both partially (VMFX70-72) and fully (VMFX75) funded two-month summer scholarships for students at the Faculty of Medicine’s undergraduate and advanced programs.  The Summer Research Scholarship (VMFX70-72)The two-month scholarship must be used for a ten-week summer research project (eight weeks of research and two weeks to prepare for the examination) within a

https://www.student.med.lu.se/en/support-and-tools/summer-scholarships-and-preparatory-research-school-2025 - 2025-07-25