Results 11 to 20 of about 15,838 (216)

Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints

open access: yesGeofluids, 2023
A thorough understanding and accurate calculation of the annulus pressure losses are paramount to drilling design and construction. However, due to the influence of the drillstring rotation and the abrupt dimensional variation at the joint, it is ...
Minghu Nie   +5 more
doaj   +1 more source

Thermal performance analysis of a thermocline storage tank with integrated annular distributors

open access: yesFrontiers in Energy Research, 2023
The implementation of single-tank thermocline storage systems in concentrating solar power systems is a promising solution to improve their stability and continuity.
Chen Junli   +4 more
doaj   +1 more source

Experimental Study of Penetration Capability of an Annular-Shaped Charge under Multipoint Synchronous Initiation

open access: yesShock and Vibration, 2023
The large-distance penetration capability of an annular-shaped charge under multipoint synchronous initiation was experimentally investigated. For different annular charge structures and different multipoint initiation settings, incident angle, collision
Liu Jie   +4 more
doaj   +1 more source

Influence of the pitch-to-diameter ratio on the circumferential non-uniformity of annular fuel outer temperature distribution

open access: yesHe jishu, 2023
BackgroundThe annular fuel has a closely arranged structure, and the coolant flow at both the gap between the stringers and the near wall surface is small, which is unfavorable to the coolant mixing between the subchannels and the uniform circumferential
ZENG Fulin   +3 more
doaj   +1 more source

Flow Mode Magnetorheological Dampers with an Eccentric Gap

open access: yesAdvances in Mechanical Engineering, 2014
This paper analyzes flow mode magnetorheological (MR) dampers with an eccentric annular gap (i.e., a nonuniform annular gap). To this end, an MR damper analysis for an eccentric annular gap is constructed based on approximating the eccentric annular gap ...
Young-Tai Choi, Norman M. Wereley
doaj   +1 more source

Investigation on braking characteristics of dashpot for hydraulic operating circuit breaker

open access: yesNihon Kikai Gakkai ronbunshu, 2016
Braking characteristics of piston-dashpot system in a hydraulic operating device for circuit breaker was investigated by the measurement and numerical analysis.
Tohru YAMASHITA   +3 more
doaj   +1 more source

Design and evaluation of an innovative LWR fuel combined dual-cooled annular geometry and SiC cladding materials

open access: yesNuclear Engineering and Technology, 2021
Dual-cooled annular fuel allows a significant increase in power density while maintaining or improving safety margins. However, the dual-cooled design brings much higher Zircaloy charge in reactor core, which could cause a great threaten of hydrogen ...
Yangbin Deng   +7 more
doaj   +1 more source

Design and Fabrication of Micro Hemispheric Shell Resonator with Annular Electrodes

open access: yesSensors, 2016
Electrostatic driving and capacitive detection is widely used in micro hemispheric shell resonators (HSR). The capacitor gap distance is a dominant factor for the initial capacitance, and affects the driving voltage and sensitivity.
Renxin Wang   +7 more
doaj   +1 more source

Towards system pressure scaling of gas assisted coaxial burner nozzles – An empirical model

open access: yesApplications in Energy and Combustion Science, 2021
The present study investigates the influence of system pressure, gas velocity, and annular gas gap width on the resulting droplet size. Three external-mixing twin-fluid atomizers are operated at a constant liquid mass flow.
Simon Wachter   +2 more
doaj   +1 more source

Modeling Of Polymer Melt Flow In The Annular Channel Of A Disk Extruder

open access: yesNauka ta progres transportu, 2023
Purpose. Polymer products are used in industry due to their performance properties. The homogeneity of the melt is essential for the quality of the final product.
V. V. Novodvorskyi, G. K. Ivanitsky
doaj   +1 more source

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