Results 171 to 180 of about 290,148 (203)

Evaluation of Pressure Oscillator Losses

AIP Conference Proceedings, 2006
Efficiencies of regenerative cryocoolers are influenced by losses within the pressure oscillator (Stirling‐type compressor). An evaluation of these losses is important when searching for ways to improve the overall cryocooler efficiency. Typically, compressor efficiency is taken as the ratio of PV power of the piston(s) to electrical input power.
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Nonlinear Pressure Oscillations in a Combustion Field

ARS Journal, 1960
M practical importance has been attached to the problem of high frequency combustion instability, in particular, the unstable pressure oscillations which may affect the performance of a rocket motor. A thorough mathematical treatment of the linearized aspects of this problem has been given by Crocco and Cheng (1-3). Basing their theory on the sensitive
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Finite pressure effects on sawtooth oscillations

Physics of Fluids B: Plasma Physics, 1991
Nonlinear 3-D simulation of sawtooth oscillations shows that the helically twisted hot spot has a prominent toroidal bulge at the large major radius side, characteristic of a high-εβp instability. This bulge drives other m/n islands just outside the mixing radius resulting in a stochastic annular region. A similar effect is also found in shaped plasmas,
W. Park, D. A. Monticello, E. Fredrickson, K. McGuire   +3 more
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Radiation-pressure enhanced opto-acoustic oscillator

2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), 2014
This paper presents a driving scheme for silicon opto-acoustic oscillators (OAO) by simultaneously exploiting radiation-pressure (RP) and RF feedback oscillation mechanisms to achieve significantly lower phase noise than could be realized by either phenomenon solely.
Matthew J. Storey, Siddharth Tallur, Sunil A. Bhave   +2 more
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Grouting of fractures using oscillating pressure

2020
In connection with the storage of spent nuclear fuel in the Swedish crystalline rock a new technology for the grouting of-very narrow — 100 )µm — fractures is being developed., The method is based on bentonite or cement with a low water content as grouting fluid and a very high static pressure — order of 2 MPa — superimposed by a high-frequency ...
Lennart Börgesson, Lennart Jönsson
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SAW Oscillator Pressure Sensors

1975 Ultrasonics Symposium, 1975
T.M. Reeder, D.E. Cullen, M. Gilden
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Oscillation of intracranial pressure and sleep

Clinical Neurology and Neurosurgery, 1986
H, Ueno, K, Shima, H, Chigasaki, S, Ishii   +3 more
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Pressure oscillation controlled CH4/CO2 replacement in methane hydrates: CH4 recovery, CO2 storage, and their characteristics

Chemical Engineering Journal, 2021
Lei Yang, Hongsheng Dong, Lunxiang Zhang
exaly  

Enhanced CO2 sequestration based on hydrate technology with pressure oscillation in porous medium using NMR

Energy, 2022
Yangmin Kuang, Lunxiang Zhang
exaly  

Combustion Under Harmonically Oscillating Pressure

2020
Boris V. Novozhilov, Vasily B. Novozhilov   +1 more
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