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Nondestructive tests --- Pulsation --- Hammers --- Nondestructive tests --- Pulsation --- Hammers
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Structural steels --- Arc welding --- Pulsation welding --- Structural steels --- Arc welding --- Pulsation welding
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Die Verwendung des Konzeptes der Vormischverbrennung in technischen Verbrennungsanlagen fördert die Ausbildung von selbsterregten Instabilitäten.Der Schwerpunkt der Arbeit liegt in der Berechnung des dynamischen Verhaltens bzw. des Frequenzgangs von pulsierten turbulenten vorgemischten Axialstrahlflammen. Dieses steht unter dem Einfluss der Bildung von kohärenten Ringwirbelstrukturen an der Brennermündung. Es werden sowohl instationäre Flammen als auch Ringwirbelströmungen numerisch untersucht.
Ringwirbel --- Modellierung --- Turbulente Strömung --- Vormischflamme --- Selbsterregte Schwingung --- Reagierende Strömung --- Pulsation --- Turbulente Verbrennung
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En partant des liens entre la structure rythmique de la musique et de la poésie néerlandaise, cette dissertation recherche l'avantage d'une formation musicale et/ou de la connaissance des langues pour percevoir les mêmes phénomènes prosodiques dans les deux domaines. Pour cela, 73 participants musiciens et/ou apprenants du néerlandais ont écouté des extraits de musique et de poésie et noté pour chacun des extraits leur perception de la pulsation, de proéminence et de la mesure. Uitgaande van de overeenkomsten tussen de ritmische structuur in muziek en Nederlandse poëzie, zoekt deze scriptie naar het voordeel van een muzikale opleiding en/of van de kennis van talen bij de perceptie van dezelfde prosodische fenomenen in de twee domeinen. Daarvoor hebben 73 deelnemers (muzikanten en/of leerders van het Nederlands) naar muziek- en poëziefragmenten geluisterd en hun perceptie van de puls, prominentie en maat aangegeven. Starting from the links between the rhythmic structure in music and in Dutch poetry, this paper investigates whether music training and/or language knowledge can help with the perception of the same prosodic phenomena in both areas. To do so, 73 musicians and/or Dutch learners listened to music and poetry extracts and noted their perception of the beat, the prominence and the meter.
Rythme --- Musique --- Poésie --- Néerlandais --- Perception --- Expérience linguistique --- Prosodie --- Pulsation --- Mesure --- Tempo --- Ritme --- Muziek --- Poëzie --- Nederlands --- Perceptie --- Taalkundig experiment --- Prosodie --- Puls --- Metrum --- Tempo --- Rhythm --- Music --- Poetry --- Dutch --- Perception --- Linguistic experience --- Prosody --- Beat --- Prominence --- Meter --- Tempo --- Arts & sciences humaines > Langues & linguistique
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Pumped storage technology is a large-scale, efficient, flexible and clean energy storage technology. The core of it is the design of pumped storage units, which involves the operation and flow characteristics of vane hydraulic machinery under pump and turbine modes, as well as the complex flow conditions of the upstream and downstream flow channels of the units. With this as the background, this book expounds on the relevant problems and their solutions, providing a scientific basis for the development of pumped storage technology. I hope this book can provide as a useful reference for readers.
Technology: general issues --- History of engineering & technology --- tip clearance --- vertical axial flow pump --- whole channel numerical simulation --- pressure pulsation --- leakage vortex --- bulb tubular pump --- numerical simulation --- adjusting speed --- transition process --- pressure fluctuation --- pump turbine --- flow energy loss --- flow–head stability --- guide vane opening --- V-inclined pipe --- sand transport --- critical velocity --- flow pattern --- orthogonal test method --- lateral intake --- CFD numerical simulation --- diversion pier --- prefabricated pumping station --- centrifugal pump --- energy characteristics --- internal flow field --- test --- integrated pump gate --- inlet channel --- outlet channel --- hydraulic performance --- “S” shaped airfoil --- bidirectional axial flow pump --- axial flow pumps --- energy --- cavitation --- numerical calculation --- Francis turbine --- sediment erosion --- clearance --- CFD --- n/a --- flow-head stability --- "S" shaped airfoil
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The rising trend in the global energy demand poses new challenges to humankind. The energy and mechanical engineering sectors are called to develop new and more environmentally friendly solutions to harvest residual energy from primary production processes. The Organic Rankine Cycle (ORC) is an emerging energy system for power production and waste heat recovery. In the near future, this technology can play an increasing role within the energy generation sectors and can help achieve the carbon footprint reduction targets of many industrial processes and human activities. This Special Issue focuses on selected research and application cases of ORC-based waste heat recovery solutions. Topics included in this publication cover the following aspects: performance modeling and optimization of ORC systems based on pure and zeotropic mixture working fluids; applications of waste heat recovery via ORC to gas turbines and reciprocating engines; optimal sizing and operation of ORC under combined heat and power and district heating application; the potential of ORC on board ships and related issues; life cycle analysis for biomass application; ORC integration with supercritical CO2 cycle; and the proper design of the main ORC components, including fluid dynamics issues. The current state of the art is considered and some cutting-edge ORC technology research activities are examined in this book.
History of engineering & technology --- organic Rankine cycle system --- zeotropic mixture --- heat exchanger --- low grade heat --- thermodynamic optimization --- method comparison --- micro-ORC --- gear pump --- CFD --- mesh morphing --- pressure pulsation --- cavitation --- dynamic analysis --- energy analysis --- exergy analysis --- organic Rankine cycle --- waste heat recovery --- natural gas engine --- scroll --- opensource CFD --- OpenFOAM --- CoolFOAM --- WOM --- positive displacement machine --- expander --- ORC --- ORC integration technologies --- advanced thermodynamic cycles --- decentralised energy systems --- benzene --- toluene --- cyclopentane --- internal combustion engine --- cogeneration --- district heating --- low sulfur fuels --- regression model --- predictive model --- ship --- techno-economic feasibility --- machinery system optimization --- life cycle assessment --- biomass --- CHP --- carbon footprint of energy production --- Brayton --- environmental impact --- exergy --- life cycle analysis --- performance parameters
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Semiconductor lasers are key components in many optical systems due to their advantages, including their small size, low cost, high efficiency, and low power consumption. It is well-known that semiconductor lasers under external perturbations, such as optical injection, optical feedback, or delayed coupling can exhibit a large variety of complex dynamical behaviors. Nowadays, cutting-edge engineering applications based on the complex dynamics of diode lasers are being conducted in areas, such as optical communications, optical signal processing, encoded communications, neuro-inspired ultra-fast optical computing devices, microwave signal generation, RADAR and LIDAR applications, biomedical imaging, and broadband spectroscopy. The prospects for these applications are even more exciting with the advent of photonic integrated circuits. This Special Issue focuses on theoretical and experimental advances in the nonlinear dynamics of semiconductor lasers subject to different types of external perturbations.
Research & information: general --- Physics --- Optical physics --- spin-VCSELs --- laser arrays --- laser dynamics --- spin flip model --- coupled lasers --- optoelectronics --- OLED --- laser --- organic laser diode --- nonlinear dynamics --- quantum dot lasers --- optical feedback --- chaotic --- linewidth enhancement factor (LEF) --- interband cascade laser --- mid-infrared chaos --- semiconductor laser --- optical phase --- gain-switching --- spontaneous emission noise --- quantum random number generation --- semiconductor lasers --- mutual coupling --- asymmetric coupling strength --- symmetry breaking --- narrow-linewidth lasers --- laser stability --- long delay --- injection-locking --- noise --- simulation --- pulsation --- chaos --- optical injection --- excitability --- neuromorphic dynamics --- modulation --- locking --- low-frequency fluctuations --- optical frequency comb --- polarization switching --- VCSEL
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Semiconductor lasers are key components in many optical systems due to their advantages, including their small size, low cost, high efficiency, and low power consumption. It is well-known that semiconductor lasers under external perturbations, such as optical injection, optical feedback, or delayed coupling can exhibit a large variety of complex dynamical behaviors. Nowadays, cutting-edge engineering applications based on the complex dynamics of diode lasers are being conducted in areas, such as optical communications, optical signal processing, encoded communications, neuro-inspired ultra-fast optical computing devices, microwave signal generation, RADAR and LIDAR applications, biomedical imaging, and broadband spectroscopy. The prospects for these applications are even more exciting with the advent of photonic integrated circuits. This Special Issue focuses on theoretical and experimental advances in the nonlinear dynamics of semiconductor lasers subject to different types of external perturbations.
spin-VCSELs --- laser arrays --- laser dynamics --- spin flip model --- coupled lasers --- optoelectronics --- OLED --- laser --- organic laser diode --- nonlinear dynamics --- quantum dot lasers --- optical feedback --- chaotic --- linewidth enhancement factor (LEF) --- interband cascade laser --- mid-infrared chaos --- semiconductor laser --- optical phase --- gain-switching --- spontaneous emission noise --- quantum random number generation --- semiconductor lasers --- mutual coupling --- asymmetric coupling strength --- symmetry breaking --- narrow-linewidth lasers --- laser stability --- long delay --- injection-locking --- noise --- simulation --- pulsation --- chaos --- optical injection --- excitability --- neuromorphic dynamics --- modulation --- locking --- low-frequency fluctuations --- optical frequency comb --- polarization switching --- VCSEL
Choose an application
The rising trend in the global energy demand poses new challenges to humankind. The energy and mechanical engineering sectors are called to develop new and more environmentally friendly solutions to harvest residual energy from primary production processes. The Organic Rankine Cycle (ORC) is an emerging energy system for power production and waste heat recovery. In the near future, this technology can play an increasing role within the energy generation sectors and can help achieve the carbon footprint reduction targets of many industrial processes and human activities. This Special Issue focuses on selected research and application cases of ORC-based waste heat recovery solutions. Topics included in this publication cover the following aspects: performance modeling and optimization of ORC systems based on pure and zeotropic mixture working fluids; applications of waste heat recovery via ORC to gas turbines and reciprocating engines; optimal sizing and operation of ORC under combined heat and power and district heating application; the potential of ORC on board ships and related issues; life cycle analysis for biomass application; ORC integration with supercritical CO2 cycle; and the proper design of the main ORC components, including fluid dynamics issues. The current state of the art is considered and some cutting-edge ORC technology research activities are examined in this book.
organic Rankine cycle system --- zeotropic mixture --- heat exchanger --- low grade heat --- thermodynamic optimization --- method comparison --- micro-ORC --- gear pump --- CFD --- mesh morphing --- pressure pulsation --- cavitation --- dynamic analysis --- energy analysis --- exergy analysis --- organic Rankine cycle --- waste heat recovery --- natural gas engine --- scroll --- opensource CFD --- OpenFOAM --- CoolFOAM --- WOM --- positive displacement machine --- expander --- ORC --- ORC integration technologies --- advanced thermodynamic cycles --- decentralised energy systems --- benzene --- toluene --- cyclopentane --- internal combustion engine --- cogeneration --- district heating --- low sulfur fuels --- regression model --- predictive model --- ship --- techno-economic feasibility --- machinery system optimization --- life cycle assessment --- biomass --- CHP --- carbon footprint of energy production --- Brayton --- environmental impact --- exergy --- life cycle analysis --- performance parameters
Choose an application
Semiconductor lasers are key components in many optical systems due to their advantages, including their small size, low cost, high efficiency, and low power consumption. It is well-known that semiconductor lasers under external perturbations, such as optical injection, optical feedback, or delayed coupling can exhibit a large variety of complex dynamical behaviors. Nowadays, cutting-edge engineering applications based on the complex dynamics of diode lasers are being conducted in areas, such as optical communications, optical signal processing, encoded communications, neuro-inspired ultra-fast optical computing devices, microwave signal generation, RADAR and LIDAR applications, biomedical imaging, and broadband spectroscopy. The prospects for these applications are even more exciting with the advent of photonic integrated circuits. This Special Issue focuses on theoretical and experimental advances in the nonlinear dynamics of semiconductor lasers subject to different types of external perturbations.
Research & information: general --- Physics --- Optical physics --- spin-VCSELs --- laser arrays --- laser dynamics --- spin flip model --- coupled lasers --- optoelectronics --- OLED --- laser --- organic laser diode --- nonlinear dynamics --- quantum dot lasers --- optical feedback --- chaotic --- linewidth enhancement factor (LEF) --- interband cascade laser --- mid-infrared chaos --- semiconductor laser --- optical phase --- gain-switching --- spontaneous emission noise --- quantum random number generation --- semiconductor lasers --- mutual coupling --- asymmetric coupling strength --- symmetry breaking --- narrow-linewidth lasers --- laser stability --- long delay --- injection-locking --- noise --- simulation --- pulsation --- chaos --- optical injection --- excitability --- neuromorphic dynamics --- modulation --- locking --- low-frequency fluctuations --- optical frequency comb --- polarization switching --- VCSEL --- spin-VCSELs --- laser arrays --- laser dynamics --- spin flip model --- coupled lasers --- optoelectronics --- OLED --- laser --- organic laser diode --- nonlinear dynamics --- quantum dot lasers --- optical feedback --- chaotic --- linewidth enhancement factor (LEF) --- interband cascade laser --- mid-infrared chaos --- semiconductor laser --- optical phase --- gain-switching --- spontaneous emission noise --- quantum random number generation --- semiconductor lasers --- mutual coupling --- asymmetric coupling strength --- symmetry breaking --- narrow-linewidth lasers --- laser stability --- long delay --- injection-locking --- noise --- simulation --- pulsation --- chaos --- optical injection --- excitability --- neuromorphic dynamics --- modulation --- locking --- low-frequency fluctuations --- optical frequency comb --- polarization switching --- VCSEL
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