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Dongtao Ji, Weigang Lu, Linguang Lu, Lei Xu, Jun Liu, Wei Shi and Guohao Huang
The shaft front-positioned tubular pump device has been widely used in practical engineering, but the shaft rear-positioned pump device is rarely used due to its low efficiency. To investigate the effect of the shaft position on the performance of a tubu...
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Yalei Bai and Donglei Wu
In daily operation, the flow state in the runner chamber of an axial flow pump is extremely complex, and the pressure pulsation caused by the vibration of the unit and the hydraulic excitation is also extremely complex. The pressure pulsation will also g...
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Dongtao Ji, Weigang Lu, Lei Xu and Linguang Lu
For pumping station projects in plain areas, shaft tubular pump devices are often used due to the low head. In actual operation, the common working range of the pump device is generally 0.8 Qbep~1.2 Qbep. Therefore, it is of great significance to study t...
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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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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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Zhihong Wang, Chunguang Wang and Weiping Tian
In order to study the flow characteristics of a nozzle with large expansion ratio and its influence on the force on the nozzle, ground cold flow test research and a fluid?structure coupling simulation analysis were carried out (maximum expansion ratio e ...
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Nicolas Poujol, Martin Buisson, Pierre Duquesne and Isabelle Trébinjac
In centrifugal compressors, Mild Surge (MS) leads to unstable operation. Previous experimental work on a centrifugal compressor designed and built by Safran Helicopter Engines (SafranHE) showed that MS corresponds to the pulsation of an alternate stall p...
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Tiezhi Sun, Xiaoshi Zhang, Jianyu Zhang and Cong Wang
High-speed underwater vehicles are subjected to complex multiphase turbulent processes, such as the growth, development, shedding, and collapse of cavitation bubbles. To study the cavity evolution and pressure pulsation characteristics, in this paper, cl...
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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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