Results 91 to 100 of about 290,148 (203)

A high-order nonconservative approach for hyperbolic equations in fluid dynamics

, 2017
It is well known, thanks to Lax-Wendroff theorem, that the local conservation of a numerical scheme for a conservative hyperbolic system is a simple and systematic way to guarantee that, if stable, a scheme will provide a sequence of solutions that will ...
Abgrall, Remi, Bacigaluppi, P, Tokareva, S   +2 more
core   +1 more source

Transient spray combustion characteristics in a gas–liquid pintle rocket engine under acoustic excitation

Scientific Reports
In order to investigate the acoustic oscillation characteristics of gas–liquid pintle rocket engines and elucidate the path by which spray combustion process provides energy to the combustor pressure oscillation, a LOX/GCH4 pintle engine with rectangular
Xuan Jin, Chao Zhu, Dejiang Chen, Zhongpei Zhang   +3 more
doaj   +1 more source

Study on drill pipe oscillation elimination and drilling efficiency enhancement of pressure-relief borehole in coal mines

Meitan xuebao
Pressure-relief borehole construction is one of the most common drilling operations in coal mines, which generally has characteristics such as coarse diameter, multiple construction angles, and large depth.
Housheng JIA, Yanxi GAO, Shaowei LIU, Zhenzhu FANG, Guoying WANG, Mengxiong FU, Bo PENG   +6 more
doaj   +1 more source

Investigation of flow phenomena in a transonic fan rotor using laser anemometry [PDF]

Several flow phenomena including flowfield periodicity, rotor shock oscillation, and rotor shock system geometry were investigated in a transonic low aspect ratio fan rotor using laser anemometry.
Strazisar, A. J.
core   +1 more source

Inertial oscillation of a vertical rotating draft with application to a supercell storm [PDF]

An analytic model (vertical rotating draft) which includes the gross features of a supercell storm on an f-plane, undergoes an inertial oscillation that appears to have been overlooked in previous analytic and numerical models.
Costen, Robert C., Stock, Larry V.
core   +1 more source

Research on the influence factors of hydraulic oscillator on drag reduction efficiency in horizontal well drilling

Measurement + Control
The application of hydraulic oscillator can solve the problems of large friction and serious pressure support in the drilling process of extended reach well and long horizontal well, but the conventional hydraulic oscillator parameter setting is not ...
Ni Weijun, Yang Guohao, Ma Chengyun, Liu Gang, Ma Fei, Zhao Kai   +5 more
doaj   +1 more source

Pressure oscillation in penstocks

Pressure oscillation in penstocks
Summaries of Doctor and Master Theses Doctor of Engineering ...
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Simulation of Single Reed Instruments Oscillations Based on Modal Decomposition of Bore and Reed Dynamics

, 2007
This paper investigates the sound production in a system made of a bore coupled with a reed valve. Extending previous work (Debut, 2004), the input impedance of the bore is projected on the modes of the air column.
Deblevid, Aude, Debut, Vincent, Guillemain, Philippe, Kergomard, Jean, Silva, Fabrice, Vergez, Christophe   +5 more
core   +1 more source

Research of the Influence of Solid Particle on Elastohydrodynamic Lubrication of Spur Gear under Oscillation Condition

Jixie chuandong, 2015
Considering solid particle,the elastohydrodynamic lubrication model of spur gear under oscillation condition is set up. The influences of solid particle on elastohydrodynamic lubrication of spur gear under sine law oscillation condition are studied ...
Huang Xingbao, Wang Youqiang, Liu Qian, Dong Ning   +3 more
doaj  

Pulse-Synchronous Intramuscular Pressure Oscillations

, 2016
Background Intramuscular pressure (IMP) is measured in studies of tissue nutrition and in the diagnosis of compartment syndromes. Patients with compartment syndromes have an elevated IMP due to increased volume in a muscle compartment. In patients with exercise-induced leg pain, the measurement of IMP is commonly regarded as the gold standard in ...
openaire