Results 51 to 60 of about 2,865 (193)

Joint Reconstruction of Absorbed Optical Energy Density and Sound Speed Distribution in Photoacoustic Computed Tomography: A numerical Investigation [PDF]

, 2015
Photoacoustic computed tomography (PACT) is a rapidly emerging bioimaging modality that seeks to reconstruct an estimate of the absorbed optical energy density within an object.
Anastasio, Mark A., Huang, Chao, Schoonover, Robert W., Wang, Kun, Wang, Lihong V.   +4 more
core   +2 more sources

Energizing Change: Liquid‐Metal‐Enabled Nanogenerators for Smart Textiles

Small Structures, Volume 7, Issue 3, March 2026.
This review highlights how liquid metals (LMs) improve energy‐harvesting smart textiles through flexible, conductive, and stable electrodes, enhancing the performance of piezoelectric and triboelectric nanogenerators. It explores LM chemistry, device innovations, textile compatibility, and future challenges, offering a roadmap for practical ...
Kamyar Shirvanimoghaddam, Peng Wu, Ilhan Ozen, Nauman Ali Choudhry, Minoo Naebe   +4 more
wiley   +1 more source

Three-Dimensional Numerical Analysis of Longitudinal Thermoacoustic Instability in a Single-Element Rocket Combustor

Frontiers in Energy Research, 2022
This study numerically investigated the thermoacoustic combustion instability characteristics of a scaled rocket combustor based on a hybrid of the Reynolds-averaged Navier–Stokes and large–eddy simulation method.
Guo Kangkang, Xu Boqi, Ren Yongjie, Tong Yiheng, Nie Wansheng   +4 more
doaj   +1 more source

Thermoacoustic instability - a dynamical system and time domain analysis

, 2014
This study focuses on the Rijke tube problem, which includes features relevant to the modeling of thermoacoustic coupling in reactive flows: a compact acoustic source, an empirical model for the heat source, and nonlinearities.
Chenadec, Vincent Le, Massot, Marc, Richecoeur, Franck, Sayadi, Taraneh, Schmid, Peter   +4 more
core   +3 more sources

A Green's function approach to predict nonlinear thermoacoustic instabilities in combustors [PDF]

, 2016
The prediction of thermoacoustic instabilities is fundamental for combustion systems such as domestic burners and industrial gas turbine engines. High-amplitude pressure oscillations cause thermal and mechanical stress to the equipment, leading to ...
Bigongiari, A, Heckl, MA
core   +2 more sources

Responsive liquid metal materials towards unstructured environment

Responsive Materials, Volume 4, Issue 1, February 2026.
Room‐temperature liquid metals integrate conductivity, deformability, and interfacial dynamics, enabling robust performance in unstructured environments. This review highlights key properties, requirements, and applications across in vivo, underwater, natural, space, and radiation settings, with advances in sensing, actuation, thermal regulation, and ...
Bo Yuan, Huaitong Song, Kaiyuan Xiang, Shili Tang, Cailin Liu, Hongzhang Wang   +5 more
wiley   +1 more source

Investigation on the stability of the Rijke-type thermoacoustic system with an axially distributed heat source

Journal of Low Frequency Noise, Vibration and Active Control
Due to the incurred damages to the combustors, large-amplitude self-sustained thermoacoustic oscillations are unwanted in many propulsion systems, such as liquid/solid rocket motors and aero-engines.
Kai Pang, Yuanhao Wang, Xinyan Li, Hongquan Sun, Chenzhen Ji   +4 more
doaj   +1 more source

Simulation of 2-way fluid structure interaction in a 3D model combustor [PDF]

, 2012
The liner of a gas turbine combustor is a very flexible structure that is exposed to the pressure oscillations that occur in the combustor. These pressure oscillations can be of very high amplitude due to thermoacoustic instability, when the fluctuations
Alemela, P.R., Kok, J.B.W., Shahi, M.
core   +3 more sources

Automatic Adaptive and Targeted Localized Refinement in Transient Structural Dynamic Simulations Using the Multiresolution Finite Wavelet Domain Method

International Journal for Numerical Methods in Engineering, Volume 127, Issue 1, 15 January 2026.
ABSTRACT The multiresolution finite wavelet domain method has been meticulously studied in numerous wave propagation simulations, showing excellent convergence properties and very fast computing times. The multiresolution procedure always starts with the coarse solution, and then finer solutions can be superimposed on the coarse solution until ...
Dimitris Dimitriou, Katerina Samara, Dimitris Saravanos   +2 more
wiley   +1 more source

Frequency domain and time domain analysis of thermoacoustic oscillations with wave-based acoustics [PDF]

, 2015
Many thermoacoustic systems exhibit rich nonlinear behaviour. Recent studies show that this nonlinear dynamics can be well captured by low-order time domain models that couple a level set kinematic model for a laminar flame, the $G$-equation, with a ...
Illingworth, SJ, Juniper, MP, Orchini, A
core   +1 more source