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Wei Li, Mingjiang Liu, Leilei Ji, Yulu Wang, Muhammad Awais, Jingning Hu and Xiaoyan Ye
This paper presents the matching characteristics of impellers and guide vanes of high capacity and pressure seawater desalination pumps by using computational fluid dynamics (CFD). The single-stage pump is numerically calculated, and its external charact...
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Xijie Song, Chao Liu and Zhengwei Wang
The vortex in a pump sump is a negative problem for the pump unit, which can lead to the decline of pump performance. Focusing on the internal pressure characteristics of the floor-attached vortex (FAV) and its influence on the pump unit, the FAV was ana...
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Fan Yang, Pengcheng Chang, Yao Yuan, Na Li, Rongsheng Xie, Xiaowen Zhang and Zhikang Lin
Vertical axial flow pump device has the characteristics of large flow and low head, which is widely used in pumping station projects with head of 3?9 m. In order to study the influence of the timing effect of the impeller relative flow channel and guide ...
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Kang Zhang, Ruize Ma, Tao Geng, Jiannan Yang and Yongjun Gong
The leakage of subsea oil and gas pipelines can have adverse impacts on production progress and the ecological environment. Investigating the sound source and near-field sound propagation of pipeline leaks is essential for understanding the acoustic char...
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Lin Zhang, Junli Yang, Tiecheng Duan, Jie Wang, Xiuyi Li and Kunyuan Zhang
A new idea of nosebleed air jets with strong coupled internal and external flow is put forward using the lateral jet control principle to improve the maneuverability and fast reaction capabilities of hypersonic vehicles. The hypersonic vehicle?s nose sta...
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Xuan Bai and Baigang Mi
A submerged inlet has good stealth characteristics and a low external drag, but it also has the disadvantage of low internal flow efficiency. In view of this, a new efficiency enhancement method based on the prepositive synergistic bulge of the inlet?s a...
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Qiaoyue Yang, Wei Li, Leilei Ji, Weidong Shi, Wei Pu, Yu Long and Xinrui He
This study presents a comprehensive investigation of the internal noise characteristics of a mixed-flow pump by combining computational fluid dynamics (CFD) and computational acoustics. The turbulent flow field of the pump is simulated using the unsteady...
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Yu. Ya. Vodiannikov,M. I. Yalanskyi,K. L. Zhykhartsev
Pág. 20 - 23
Results of research of distribution of pressure forces of the brake blocks on wheels during braking in dependance on arrangement of the wheel pair on a freight car are presented. Statistical characteristics of values of the pressure forces for loaded and...
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Qiaorui Si, Fanjie Deng, Yu Lu, Minquan Liao and Shouqi Yuan
A numerical method using combined detached-eddy simulation (DES) and a cavitation model considering the rotation effect is used for unsteady cavitation flow field of the centrifugal pump. A closed-type pump test system was established to obtain the pump ...
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Yongqiang Tian, Shuo Liu, Jingchang Long, Wei Chen and Jianxing Leng
The deep-sea environment has the characteristics of high pressure and low temperature. In addition to the extremely high requirements on the structural reliability, the ultra-high ambient pressure also has a great impact on the working characteristics of...
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Stephen T. Hsieh, Himanshu Mishra, Nima Bolouki, Weite Wu, Chuan Li and Jang-Hsing Hsieh
A plasma system attached with one internal coil (for generating inductively coupled plasma) and two sputtering carbon targets was set up to deposit PP-MMA (plasma polymerized methyl methacrylate) thin films. PP-MMA was used as a model material in the pre...
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Julio Ronceros, Carlos Raymundo, Eduardo Ayala, Diego Rivera, Leonardo Vinces, Gustavo Ronceros and Gianpierre Zapata
This study delves into the examination of internal flow characteristics within closed (with nozzles) and open-end pressure-swirl atomizers (lacking nozzles). The number of inlet channels ?n? and the opening parameter ?C? were manipulated in this study, a...
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Haigang Wen, Luyao Li, Guangtai Shi, Haijun Ma and Xiaodong Peng
A spiral axial-flow blade pump (SABP), as the core piece of equipment in the oil and natural gas closed-gathering and transportation process, can not only transport gas?liquid mixtures with a high gas content, but can also transport gas?liquid?solid mixt...
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Hongzhen Zhu and Jianghai Wu
Pipelines are designed to carry seawater with hydrostatic pressure below sea level in the ship industry. Previously conducted studies have established the FSI (Fluid?Structure Interaction) equations for thin-walled, fluid-filled pipelines based on the Ti...
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Yuyang Cong, Yang Liu, Yurong Tang, Jiale Ma, Xingyu Wang, Shuai Shen and Hong Zhang
It is easy to cause increases in temperature and the gasification of water in materials, facilitated via supercharging and the generation of instantaneous strong pressure under the collaborative action of a microwave and a vacuum, thus facilitating the i...
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Feihong Yun, Dong Liu, Xiujun Xu, Kefeng Jiao, Xiaoquan Hao, Liquan Wang, Zheping Yan, Peng Jia, Xiangyu Wang and Bin Liang
Taking a subsea collet connector as an example, the contact characteristics of the sealing structure of the subsea connector under thermal?structural coupling were studied. Considering the heat transfer problem of the subsea connector in deep water, the ...
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Shu Sun, Zhenlong Wu, Hexia Huang, Galih Bangga and Huijun Tan
Gust is a common atmospheric turbulence phenomenon encountered by aircraft and is one major cause of several undesired instability problems. Although the response of aircraft to the incoming gust has been widely investigated within the subject of externa...
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Hasan Aydogan
The changes in the performance, emission and combustion characteristics of bioethanol-safflower biodiesel and diesel fuel blends used in a common rail diesel engine were investigated in this experimental study. E20B20D60 (20% bioethanol, 20% biodiesel, 6...
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Jian Wang, Ze Chen, Linghao Li, Chuan Wang, Kangle Teng, Qiang He, Jiren Zhou, Shanshan Li, Weidong Cao, Xiuli Wang and Hongliang Wang
Submersible tubular pumps are an ideal choice for pump stations that require high flow rates and low lift. These pumps combine the unique features of submersible motors with axial flow pump technology, making them highly efficient and cost-effective. The...
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Zikang Jin, Zonghan Yu, Fanshuo Meng, Wei Zhang, Jingzhi Cui, Xiaolong He, Yuedi Lei and Omer Musa
The parametric design method is widely utilized in the preliminary design stage for hypersonic vehicles; it ensures the fast iteration of configuration, generation, and optimization. This study proposes a novel parametric method for a wide-range, wing-mo...
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