Results 1 to 10 of about 834 (262)
Assessment of coupling effects of coolers and piping systems [PDF]
Nuclear Engineering and Design, 1985 Abstract In the dynamic analysis of large systems there is a great incentive to perform the calculations separately for smaller, decoupled subsystems. This simplification has to be justified, as best by using appropriate decoupling criteria. In practice, however, this procedure is difficult to accomplish thoroughly due to the unsatisfactory state-of ...
P. Kaas, W. Hollerbach
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Repair piping inside with insert couplings
Oil and Gas Business, 2014 Р. Г. Султанов
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Coupling impedance of a PEC angular strip in a vacuum pipe [PDF]
IET Microwaves, Antennas & Propagation, 2021 AbstractThis study deals with the evaluation of the longitudinal and transverse coupling impedance of a charge travelling in a drift tube with a perfectly electric conductive angular strip. The problem is formulated in the particle frame as dual series equations, and efficiently solved through the representation of the unknown in terms of Neumann ...
Dario Assante +3 more
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“Pipe organ” air-coupled broad bandwidth transducer [PDF]
2017 IEEE International Ultrasonics Symposium (IUS), 2017 Air-coupled transducers are used to conduct fast non-contact inspections in NDT. Normally, the bandwidth of a conventional transducer can be enhanced, but with a cost to its sensitivity. However, low sensitivity is very disadvantageous in air-coupled devices. This paper presents a methodology for improving the bandwidth of an air-coupled micro-machined
Zhu, Botong +4 more
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Nonlinear Coupled Motions of a Pipe-in-Pipe System Experiencing Vortex-Induced Vibrations
Nonlinear Dynamics, 2023 Abstract This paper delves into the dynamics of the pipe-in-pipe system, crucial in offshore oil and gas exploration, featuring an inner drill string nestled within an outer riser. A reduced-order model with five degrees of freedom is proposed to capture the coupled dynamics of this system.
Xiangyu Hou +3 more
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Thermal coupling between a spiral pipe and a conducting volume [PDF]
International Journal of Heat and Mass Transfer, 2014 Abstract Here we document the effect of flow configuration on the heat transfer performance of a spiral shaped pipe embedded in a cylindrical conducting volume. We considered several configurations with fixed volumes of fluid and solid. First, we optimized the geometry of two spiral pipes with varying spacing between the spiral turns and the vertical
Alalaimi, M, Lorente, S, Bejan, A
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Design of an In-Pipe Robot Coupled With Multiple Cams
IEEE Access, 2023 The inchworm in-pipe robot has the advantages of stable support, low walking resistance, and high flexibility. However, the gait motion of in-pipe robots relies on the precise coordination of three motors, which greatly increases the complexity of control.
Qizhi Xie +3 more
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Beam coupling impedances of obstacles protruding into a beam pipe [PDF]
Physical Review E, 1997 4 pages, LaTeX (REVTeX), 2 figures (eps); corrected and revised, comparison with simulations added; presented at PAC97 (Vancouver, May 97)
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Simulation of pipe progression in a levee foundation with coupled seepage and pipe flow domains
Soils and Foundations, 2014 Abstract A very large percentage of piping cases have been brought about by internal erosion, which is the primary cause of dam failures. This study developed a numerical model to simulate the pipe progression in a levee foundation by analyzing the inception and transportation of erodible particles from the soil fabric. An approach that considers the
Wei-jie Dong +4 more
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Nonlinear modeling of the ‘‘mitnahme-effekt’’ in coupled organ pipes
The Journal of the Acoustical Society of America, 2000 Two slightly mistuned organ pipes of the same nominal tone placed on neighboring holes of the same groove of the slider chest can synchronize if simultaneously sounded. The frequency difference between the two pipes disappears (mitnahme-effekt) giving up on a common frequency which is, in general, slightly higher than both natural frequencies of the ...
Domenico Stanzial +2 more
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