Numerical computation for parallel plate thermoacoustic heat exchangers in standing wave oscillatory flow [PDF]
, 2011 A simplified computational method for studying the heat transfer characteristics of parallel plate thermoacoustic heat exchangers is presented. The model integrates the thermoacoustic equations of the standard linear theory into an energy balance-based ...
Piccolo, Antonio, A. Piccolo
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International Journal for Numerical Methods in Fluids, Volume 94, Issue 8, Page 1082-1110, August 2022., 2022 Vorticity contours in a three‐dimensional bluff‐body combustor. Abstract The objective of this study is to develop and apply efficient solution techniques for numerical modeling of combustion with stiff chemical kinetics in practical combustors. The new technique combines a fourth‐order implicit‐explicit (IMEX) additive Runge‐Kutta scheme (ARK) with ...
Joshua Christopher +2 more
wiley +1 more source
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 +3 more
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On the mechanism by which nose bluntness suppresses second-mode instability
Theoretical and Applied Mechanics Letters, 2020 : A physical mechanism by which nose bluntness suppresses second-mode instability is proposed. Considered are 7 degree half-angle straight cones with nose bluntness radii of 0.15 mm, 3.556 mm, 5 mm, 9.525 mm, 12.7 mm and 25.4 mm at tunnel conditions ...
Armani Batista +2 more
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Advanced Control for Applications, Volume 4, Issue 2, June 2022., 2022 Abstract Predictive functional control (PFC) is a straightforward and cheap model‐based technique for systematic control of well‐damped open‐loop processes. Nevertheless, its oversimplified design characteristics are often the cause of diminished efficacy in more challenging applications; processes involving lightly damped and/or unstable dynamics have
Muhammad Saleheen Aftab +1 more
wiley +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. +11 more
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Acoustic Triggering of Combustion Instability in a Swirling Flame: An Experimental Study
Energies, 2023 Combustion instability is a common thermoacoustic coupling problem in combustion systems, and the pressure oscillations generated inevitably damage the combustion system. Studying the mechanism of combustion instability, especially the triggering problem
Yunpeng Liu +3 more
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Application of laser-based instrumentation for measurement of time-resolved temperature and velocity fields in the thermoacoustic system [PDF]
, 2010 This work aims to develop reliable laser-based measurement techniques to enable fundamental heat transfer and fluid flow studies in thermoacoustic systems.
Yu, Z. +8 more
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Aerospace, 2021 In the present work, 3D Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations are performed to investigate the generation and mitigation mechanism of combustion-sustained thermoacoustic instabilities in a modelled swirl combustor.
Yuze Sun, Dan Zhao, Xiaowei Zhu
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Application of planar laser-induced fluorescence measurement techniques to study the heat transfer characteristics of parallel-plate heat exchangers in thermoacoustic devices [PDF]
, 2010 This paper describes the development of an experimental arrangement and the application of acetone-based planar laser-induced fluorescence (PLIF) measurement techniques to study the unsteady characteristics of heat transfer processes in the parallel ...
Artur J Jaworski +8 more
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