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Design and research of hydraulic cylinder precise control test system
Meitan kexue jishu, 2023 The position deviation after the continuous action of the hydraulic support in the fully-mechanized mining face affects the mining efficiency of the shearer.
Lingyu MENG, Rulin ZHOU, Zijian GUO
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RUDN Journal of Engineering Research, 2023 The current guidelines recommend evaluating the quality of start-up and shut-down modes, as well as operation modes under load, according to the compliance of start-up parameters with start-up assignment schedules, standard instructions, a regime map ...
Yuri A. Radin +2 more
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Brinkman–Forchheimer-Darcy flow past an impermeable cylinder embedded in a porous medium [PDF]
INCAS Bulletin, 2015 For the flow past an impervious cylinder embedded in a fluid saturated porous medium only the linear (Darcy and Darcy - Brinkman) models were used.
Gheorghe JUNCU, Constantin POPA
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Applied Sciences, 2021 To improve the accuracy of a flexible support system (FSS) used for optical mirror processing, the influence of air content in the working medium and ambient temperature change on the FSS is analyzed and studied.
Zujin Jin +3 more
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Journal of Engineering and Sustainable Development, 2023 In the present study, forced convection heat transfer on eight inline cylinders immersed in a 10 × 10 × 30 cm packed bed of porous medium is numerically explored with a range of Reynolds numbers from 1100 to 2250.
Enas Khudhair, Dhamyaa Khudhur
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Energies, 2023 At partial load, traditional automotive gasoline engines have high pumping losses due to the throttling of the intake charge for load control. Variable Valve Timing (VVT) and the introduction of externally cooled EGR could reduce the pumping losses but ...
Huiyong Yang +5 more
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Principal Modernization Solutions for a 300 MW Power Unit to be Converted to Operate at Ultra-Supercritical Steam Parameters [PDF]
Journal of Mechanical Engineering, 2021 This paper analyses the state of power engineering in Ukraine and the main trends in the development of the world market in the field of converting high-capacity powerful power units of thermal power plants into ultra-supercritical (USC) ones.
Andrii O. Kostikov +6 more
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Plastic and creep deformations of thick-walled cylinder with a rigid casing under internal pressure [PDF]
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021 The creep and plastic flow of cylindrical pressurized vessel with rigid casing was considered. To combine creep and plastic deformations the vessel was heated and subjected to the high inner pressure. The semi-analytical solution for plain strain problem
Sergey Viktorovich Firsov
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Energies, 2020 It is difficult to decompose the in-cylinder pressure of combustion of the direct injection (DI) diesel engine, a transient process associated with complicated oscillation components, because of its steep property. An adaptive cyclic average method based
Xu Zheng +5 more
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Stress prediction of marine diesel engine crankshaft based on digital twin technology
Zhongguo Jianchuan Yanjiu, 2023 ObjectivesA crankshaft is a key component of marine diesel engines. In order to monitor crankshaft stress and ensure the safe and reliable operation of ships, a crankshaft stress monitoring method based on digital twin technology is proposed.MethodsBased
Yonghua YU +4 more
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