Results 21 to 30 of about 372,349 (178)
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
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Advanced Biology, Volume 5, Issue 11, November 2021., 2021 Microvessels‐on‐chips are advanced in vitro models that are currently considered as future replacements of animal models. However, the high‐throughput use of microvessels‐on‐chips for patient‐on‐a‐chip studies is still lacking. This study develops an innovative method for screening plasma samples in the microvessel‐on‐a‐chip platforms that can be ...
Abidemi Junaid +12 more
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Rijke Organ: Modeling and Control of Array of Rijke Tubes
IFAC-PapersOnLine, 2020 Abstract Rijke tube is a popular physical experiment demonstrating a spontaneous generation of sound in an open vertical pipe with a heat source. This laboratory instance of thermoacoustic instability has been researched due to its significance in practical thermoacoustic systems.
Krištof Pučejdl +2 more
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International Journal of Laboratory Hematology, Volume 43, Issue 1, Page 29-39, February 2021., 2021 Abstract Introduction In 2015, Sysmex launched a new series of hematology analyzers (XN‐L Series) designed to fulfill the needs of niche laboratories in areas such as pediatrics, dialysis, neurology, and oncology while providing a compact solution. In this study, we evaluate the whole blood and body fluid modes of one of these analyzers, the XN‐350 ...
Tania A. Khartabil +3 more
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Hopf Bifurcation Analysis of the Combustion Instability in a Liquid Rocket Engine
Aerospace, 2022 The bifurcation process of self-sustained combustion instability pressure perturbations in a liquid rocket combustor is investigated based on the Helmholtz equations and a pressure dependent flame describing function. The modal frequency and growth rates
Xuanye Liang +3 more
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Transition to Instability in Segmented Rijke Tube [PDF]
The Open Thermodynamics Journal, 2009 Thermoacoustic instabilities can arise in systems where unsteady heat release is favorably coupled with acous- tic pressure oscillations. A modified Rijke tube with segments having different sections is found to have lower threshold levels of heat addition rate needed for exciting the fundamental acoustic mode of the tube.
Rafael Hernandez, Konstantin I. Matveev
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International Journal of Aerospace Engineering, Volume 2020, Issue 1, 2020., 2020 To broaden its’ effective frequency range and to improve its transmission loss performance, a modified design of a Helmholtz resonator is proposed and evaluated by implementing a rigid baffle in its cavity. Comparison is then made between the proposed design and the conventional one by considering a rectangular duct with the resonator implemented in ...
Di Guan +3 more
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Bistability and Triggering Analysis of Thermoacoustic Instability in a Horizontal Rijke Tube
Xibei Gongye Daxue Xuebao, 2019 Dynamical systems theory has been often employed to study nonlinear flow and flame dynamics in combustion systems. However, the corresponding studies using nonlinear dynamics to analyze the Rijke tube thermoacoustic system are still occasional.
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Effect of pointed and diffused air injection on premixed flame confined in a Rijke tube
Cogent Engineering, 2016 The coupling between pressure fluctuations and unsteady heat release in a combustion systems results in acoustic oscillations inside the combustion system.
Nilaj N. Deshmukh, S.D. Sharma
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Modelling and Simulation in Engineering, Volume 2018, Issue 1, 2018., 2018 This paper describes a numerical model based on discontinuous Galerkin method for thermoacoustic investigation. Numerical investigation was conducted to study the behaviour of thermoacoustic wave propagations induced by thermal effects in 2‐dimensional enclosure. The compressible Navier‐Stokes equations are used as the governing equations.
Pranowo Pranowo +2 more
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