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Shiming Wei and Kaixuan Qiu
The extraction of shale gas from onshore and offshore shale gas reservoirs will play an important role in meeting China?s future energy needs, which will not only help alleviate the energy crisis but also contribute to climate change mitigation. As for t...
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Yongzhi Jiu, Yunfeng Gao, Fuguang Lei, Yanzhi Zhu and Zhizeng Zhang
Stiffened deep cement mixing (SDCM) piles are composite piles that combine the advantages of single large-diameter deep cement mixing (DCM) and precast concrete piles. They comprise precast concrete piles as the core and cast-in-place DCM piles as the ou...
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Jan Erik Zeriadtke, Joël Martin and Viola Wartemann
The performance of hybrid rocket engines is significantly influenced by the fuel geometry. Burnback simulations, to determine the fuel surface and fluid volume, are therefore an important tool for preliminary design. This work presents a method for the s...
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Eduard Lunca, Silviu Vornicu and Alexandru Salceanu
There is a special concern for measuring and simulating low-frequency magnetic fields generated by underground power cables, particularly in human exposure studies. In the present study, an accurate 2D finite element model for computing magnetic fields g...
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Stjepan Pilicic, Ante Skoblar, Roberto ?igulic and Luka Traven
For some sound sources, the function of the square of sound pressure amplitudes on the sphere in the far field is an integrable function or can be integrated with geometrical simplifications, so an exact or approximated analytical expression for the soun...
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Nicu?or Baroiu, Virgil Gabriel Teodor, Viorel Paunoiu, Georgiana-Alexandra Moro?anu and Iona?-Catalin Dumitrescu
In most situations, for the proper design of a gerotor pump, numerous parameters must be taken into account: the pump geometry, the properties of the materials from which the pumps are made (Young?s modulus, Poisson?s coefficient, friction coefficients, ...
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Rongge Yan, Kang An, Qingxin Yang and Jinbo Jiang
The rail inductance gradient is an important parameter of the electromagnetic launcher. The calculation of its value is important for the design of the launcher structure and for predicting the motion behavior of the armature. The current research on the...
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Jaan H. Pu
The failure of swirling ship propellers in marine environments can lead to huge repair costs. One of the main causes of such failure is when propellers tangle with vegetation, especially in shallow flow environments like ports, harbours, or shipyards. In...
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Xiuying Wang, Zhongsheng Tan, Qinglou Li and Weihan Zheng
The primary support structure of a tunnel often needs various support methods, such as bolts, steel arch frames, and shotcrete. It is of great significance to quickly calculate the displacement of tunnel walls and the bearing capacity of primary supports...
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Nikolay Hinov and Tsvetana Grigorova
The main objective of this article is to propose a rational methodology for designing multi-phase step-down DC-DC converters, which can find applications both in engineering practice and in power electronics education. This study discusses the main types...
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