Results 1 to 10 of about 213 (131)

Development of closed-loop active control method for suppression of thermoacoustic instability using radial air micro-jets [PDF]

MethodsX, 2023
Thermoacoustic instabilities present in the combustor of power producing devices are having adverse effects on the performance. To avoid thermoacoustic instabilities, design of control method is very much essential.
Nilaj Deshmukh, Afzal Ansari, Praseed Kumar, Allen Varghese George, Febin Joseph Thomas, Merick Steve George   +5 more
doaj   +2 more sources

Preventing a global transition to thermoacoustic instability by targeting local dynamics [PDF]

Scientific Reports, 2022
The burning of fossil fuels to generate power produces harmful emissions. Lowering such emissions in gas turbine engines is possible by operating them at fuel-lean conditions.
Nitin Babu George, Manikandan Raghunathan, Vishnu R Unni, R. I. Sujith, Jürgen Kurths, Elena Surovyatkina   +5 more
doaj   +2 more sources

Experimental Study of Flame Dynamics in a Triple-Injector Swirling Nonpremixed Combustor Under Different Thermoacoustic Self-Excited Instability Modes [PDF]

Sensors
Combustion instability is one of the prominent and unavoidable problems in the design of high-performance propulsion systems. This study investigates the heat release rate (HRR) responses in a triple-nozzle swirling nonpremixed combustor under various ...
Xiang Zhang, Suofang Wang, Yong Liu
doaj   +2 more sources

Emerging topics in nanophononics and elastic, acoustic, and mechanical metamaterials: an overview. [PDF]

Nanophotonics, 2023
Abstract This broad review summarizes recent advances and “hot” research topics in nanophononics and elastic, acoustic, and mechanical metamaterials based on results presented by the authors at the EUROMECH 610 Colloquium held on April 25–27, 2022 in Benicássim, Spain.
Krushynska AO, Torrent D, Aragón AM, Ardito R, Bilal OR, Bonello B, Bosia F, Chen Y, Christensen J, Colombi A, Cummer SA, Djafari-Rouhani B, Fraternali F, Galich PI, Garcia PD, Groby JP, Guenneau S, Haberman MR, Hussein MI, Janbaz S, Jiménez N, Khelif A, Laude V, Mirzaali MJ, Packo P, Palermo A, Pennec Y, Picó R, López MR, Rudykh S, Serra-Garcia M, Sotomayor Torres CM, Starkey TA, Tournat V, Wright OB.   +34 more
europepmc   +2 more sources

Hydrogen-Based Long-Duration Energy Storage: Technologies, System Integration, and Techno-Economic Performance. [PDF]

Glob Chall
Hydrogen‐based long‐duration energy storage (LDES) converts surplus renewable electricity into hydrogen through electrolysis, stores it using suitable storage technologies, and reconverts it into electricity, heat, or transport fuels. AI‐driven optimization, digital twins, and techno‐economic, environmental, and reliability assessments enable efficient,
Haggam RA, Javed S, Van Minh N, Sivanraju R, Prabhakar P.   +4 more
europepmc   +2 more sources

Focused Power Ultrasound Mediated Inferior Perirenal Adipose Tissue Modification Therapy for Essential Hypertension: A Pilot Study. [PDF]

J Clin Hypertens (Greenwich)
ABSTRACT Perirenal adipose tissue (PRAT) contributes to the maintenance of elevated blood pressure through afferent nerves and serves as an important peripheral, modifiable target for hypertension management. This single‐center, prospective pilot trial assessed the feasibility and safety of a novel focused power ultrasound device for perirenal adipose ...
Hua Y, Li MH, Wu TT, Jing L, Jiang M, Liu CY, Yang JM, Lou YX, Yuan Y, Tian YF, Zhang M, Wang RS, Cai J, Sheng YH, Sun W, Kong XQ.   +15 more
europepmc   +2 more sources

Bayesian Nonparametric Modeling of Categorical Data for Information Fusion and Causal Inference [PDF]

Entropy, 2018
This paper presents a nonparametric regression model of categorical time series in the setting of conditional tensor factorization and Bayes network. The underlying algorithms are developed to provide a flexible and parsimonious representation for fusion
Sihan Xiong, Yiwei Fu, Asok Ray
doaj   +2 more sources

Prediction of acoustic pressure of thermoacoustic combustion instability based on Elman neural network

Journal of Low Frequency Noise, Vibration and Active Control, 2023
Accurate prediction of thermoacoustic instability is a prerequisite for thermoacoustic control to avoid the damage of combustion chamber, however, this problem has not been completely solved yet.
Qingwen Zeng, Chunyan Hu, Hanling Xu, Jiaxian Sun, Xiangmin Tan, Junqiang Zhu   +5 more
doaj   +1 more source

Analysis on Combustion Instability Characteristics of Model Swirl Combustor With Gas Fuel

发电技术, 2022
Combustion instability is easy to occur under lean combustion of gas turbine. Analyzing and predicting the characteristics of unstable combustion is of great significance to ensure the normal operation of combustion chamber. The flame describing function
HAO Jiangang, GONG Wenming, DING Yang, ZHENG Danwei, LIU Yong   +4 more
doaj   +1 more source

Seeds of phase transition to thermoacoustic instability

New Journal of Physics, 2022
Tackling the problem of emissions is at the forefront of scientific research today. While industrial engines designed to operate in stable regimes produce emissions, attempts to operate them at ‘greener’ conditions often fail due to a dangerous ...
M Raghunathan, N B George, V R Unni, R I Sujith, J Kurths, E Surovyatkina   +5 more
doaj   +1 more source