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Showing 1 to 15 of 15 for “"Pressure Gain"”.
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Middle ear pressure gain and cochlear input impedance in the chinchilla
Measurements of middle ear conducted sound pressure in the cochlear vestibule PV have been performed in only a few individuals from a few mammalian species. Simultaneous measurements of sound-induced stapes velocity VS are even more rare. We report simultaneous measurements of VS and PV in …
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Shockless explosion combustion - Controlled autoignition in stratified mixtures for pressure gain combustion
… autoignition in a reactive mixture flow as a pressure gain combustion approach. Pressure gain combustion represents a promising concept to achieve an increase in the thermal efficiency of gas turbine applications compared to conventional constant pressure combustion. The concept is based on a …
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Design Solutions for the Coupling of High-Pressure Turbine Vanes to Pressure-Gain Combustors
L'abstract è presente nell'allegato / the abstract is in the attachment
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Advancing Exhaust Flow Uniformity, Operational Stability, and Total Pressure Gain of Rotating Detonation Engines for Successful Turbine Integration
Rotating Detonation Combustors (RDCs) have gained significant attention in recent years for their potential for higher fuel efficiency through pressure-gain combustion (PGC). RDC integrated with a gas turbine, offers the potential for increased system efficiency. However, RDC operation involves …
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Investigation of Pulse Detonation Engine Flow Conditions for Turbomachinery Integration
<p>Pressure gain combustion has been known to be more thermodynamically efficient than its constant pressure counterpart, which employs deflagration. Integration of pressure gain combustors into gas turbine engines has been and still is one of the most important challenges facing the gas turbine …
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Influence of Fuel Inhomogeneity and Stratification Length Scales on Detonation Wave Propagation in a Rotating Detonation Combustor (RDC)
… efficiency over the traditional constant pressure combustor. These detonation-based engines are also known as Pressure Gain Combustion systems (PGC) and Rotating Detonation Combustor (RDC) is a form of PGC, in which the detonation wave propagates azimuthally around an annular combustor. …
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Computational Methods for Optimizing Rotating Detonation Combustor (RDC) to Integrate with Gas Turbine
Pressure Gain Combustion (PGC) systems have gained significant focus in recent years due to its potential for increased thermodynamic efficiency over a constant pressure cycle (or Brayton cycle). A rotating detonation combustor (RDC) is a type of PGC system, which is thermodynamically more …
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A Fully-Implantable Low-Noise Emi-Resistant Piezoelectric-Polymer Microphone and Amplifier for the Middle Ear
… nm of displacement. When implanted, we achieve a pressure sensitivity of 80–100 fC/Pa referenced to ear canal pressure below 2 kHz and 8–10 fC/Pa above 4 kHz. We expect this sensitivity at high frequency to substantially improve when measured relative to free-field sound pressure, as the horn-like …
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Methods of Diffusing Pulse Detonation Combustion
… As a result, detonation offers higher pressure and temperature gain across the wave front compared to the comparable deflagration. Since a detonation is a supersonic event which uses a shock to compress and dissociate reactants, a Pulse Detonation Combustor (PDC) is a relatively simple …
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Effect of Selective and Nonselective Cyclooxygenase Enzyme Inhibition on Arterial Blood Pressure and Cerebral Blood Flow with Exposure to Intermittent Hypoxia in Humans
… simulating obstructive sleep apnea raises blood pressure (BP) and impairs cerebral blood flow response. The pathophysiology of intermittent hypoxia-mediated increase in BP involves multiple mechanisms but the role of cyclooxygenase (COX) catalyzed vasoactive prostaglandins (PG) is unclear. …
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Thyroid in intestinal development during atlantic salmon smoltification
… and ions, process them, and handle the osmotic pressure gain in SW. This organ needs to be equipped to accommodate these changes. Thyroid hormones (THs) play an essential role in developing and differentiating the intestine in tadpoles and mammals. They are important in the preparation for new …
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Investigation of methane-fueled rotating detonation combustor exhaust flow field via time-resolved particle image velocimetry
… detonation combustors (RDCs) as a form of pressure gain combustion (PGC) have received increased research attention in the power generation and aerospace/defense propulsion fields due to the potentially substantial thermal efficiency advantages associated with its operation cycles as …
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On the Challenges of integrating a Rotating Detonation Combustor with an Industrial Gas Turbine and important design considerations for Row-1 Blades
… performance of such gas turbine power cycles, pressure gain combustion (PGC) has gained significant interest. The potential for an increase in the thermodynamic efficiency over the constant-pressure Brayton Cycle has made detonation combustors, a type of PGC, an attractive alternative to …
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Traversing hot jet ignition delay of hydrocarbon blends in a constant volume combustor
… order to obtain insights about constant-volume pressure-gain combustion process initiated by a moving source of ignition and also to glean useful data about design and operation of a wave rotor combustor. Reactive hot-jets are useful to ignite fuel-air mixtures in internal combustion engines and …
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Assessing the Cardiovagal Baroreflex
… and increases in systolic arterial blood pressure produce baroreflex mediated shortening and lengthening, respectively, of the R-R interval. This phenomenon, otherwise known as the cardivagal baroreflex, is best described by the sigmoid relationship between R-R interval length and systolic …