Results 41 to 50 of about 124,231 (205)

Heat transfer processes in parallel-plate heat exchangers of thermoacoustic devices - Numerical and experimental approaches [PDF]

, 2012
This paper addresses the issues of heat transfer in oscillatory flow conditions, which are typically found in thermoacoustic devices. The analysis presented concerns processes taking place in the individual "channels" of the parallel-plate heat ...
Piccolo, A, Piccolo, Antonio, Jaworski, Artur J, Jaworski, AJ, Jaworski A. J.   +4 more
core   +1 more source

3D convolutional selective autoencoder for instability detection in combustion systems

Energy and AI, 2021
While analytical solutions of critical (phase) transitions in dynamical systems are abundant for simple nonlinear systems, such analysis remains intractable for real-life dynamical systems. A key example is thermoacoustic instability in combustion, where
Tryambak Gangopadhyay, Vikram Ramanan, Adedotun Akintayo, Paige K Boor, Soumalya Sarkar, Satyanarayanan R Chakravarthy, Soumik Sarkar   +6 more
doaj   +1 more source

Convective Velocity Perturbations and Excess Gain in Flame Response as a Result of Flame-Flow Feedback

Fluids, 2022
Convective velocity perturbations (CVPs) are known to play an important role in the response of flames to acoustic perturbations and in thermoacoustic combustion instabilities.
Thomas Steinbacher, Wolfgang Polifke
doaj   +1 more source

Selection and experimental evaluation of low-cost porous materials for regenerator applications in thermoacoustic engines [PDF]

, 2010
This paper aims at evaluating three selected low-cost porous materials from the point of view of their suitability as regenerator materials in the design of thermoacoustic travelling-wave engines.
Yu, Z., Jaworski, A.J., Abduljalil, Abdulrahman S., Artur J. Jaworski, Yu, Zhibin, Yu, Z, Jaworski, Arthur J., Abduljalil, A.S., Abdulrahman S. Abduljalil, Zhibin Yu, Jaworski, AJ, Abduljalil, AS   +11 more
core   +1 more source

Application of a three-step approach for prediction of combustion instabilities in industrial gas turbine burners

Journal of the Global Power and Propulsion Society, 2018
Recently, because of environmental regulations, gas turbine manufacturers are restricted to produce machines that work in the lean combustion regime. Gas turbines operating in this regime are prone to combustion-driven acoustic oscillations referred as ...
Dmytro Iurashev, Giovanni Campa, Vyacheslav V. Anisimov, Ezio Cosatto, Luca Rofi, Edoardo Bertolotto   +5 more
doaj   +1 more source

Flame dominated thermoacoustic instabilities in a system with high acoustic losses [PDF]

, 2016
The thermoacoustic stability behaviour of a flame is experimentally investigated in the presence of large acoustic losses. Recently it has become clear that under such conditions an instability can occur due to an intrinsic local feedbackloop at the heat
Hoeijmakers, P.G.M., Nijmeijer, H., Kornilov, V.N., de Goey, L.P.H.; id_orcid, Lopez Arteaga, I., Kornilov, Viktor,, Arteaga, Ines Lopez,, de Goey, Philip, Hoeijmakers, Maarten, Nijmeijer, Henk   +9 more
core   +2 more sources

Advances and Challenges in Thermoacoustic Network Modeling for Hydrogen and Ammonia Combustors

Energies
The transition to low-carbon energy systems has heightened interest in hydrogen and ammonia as sustainable alternatives to traditional hydrocarbon fuels.
Seungmin Guk, Jaehoon Lee, Juwon Kim, Minwoo Lee   +3 more
doaj   +1 more source

Application of linear hydrodynamic stability analysis to reacting swirling combustor flows

Journal of Fluid Science and Technology, 2014
This paper presents recent research activities on coherent structures in combustor flows employing linear hydrodynamic stability theory. Large-scale coherent structures play an important role in swirling combustor flows.
Christian Oliver PASCHEREIT, Steffen TERHAAR, Bernhard ĆOSIĆ, Kilian OBERLEITHNER   +3 more
doaj   +1 more source

Thermoacoustic Instability in Combustors

Annual Review of Fluid Mechanics
Thermoacoustic instability is a flow instability that arises due to a two-way coupling between acoustic waves and unsteady heat release rate. It can cause damaging, large-amplitude oscillations in the combustors of gas turbines, aeroengines, rocket engines, etc., and the transition to decarbonized fuels is likely to introduce new thermoacoustic ...
Morgans, AS, Yang, D
openaire   +2 more sources

Physical Reservoir Computing Using Microelectromechanical Systems

Advanced Physics Research, Volume 5, Issue 11, November 2026.
Physical reservoir computing (PRC) transforms micro‐electro‐mechanical (MEMS) sensors into intelligent computing nodes by utilizing their intrinsic nonlinear dynamics and short‐term memory effects. This review surveys recent progress in MEMS‐based reservoir computing, covering its theoretical foundations, device architectures, and applications in ...
Mariam Gada, Nizar Jaber, Nazek El‐Atab   +2 more
wiley   +1 more source