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Hanqiao Han, Yun Long and Jinqing Zhong
When we tested the water jet propulsion pump, we found that there were significant vibrations in the pump, especially at small flow points that deviated from the design conditions. The water jet propulsion pump is a mixed-flow pump with guide vane, which...
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Mengxing Gao and Li Cheng
In order to improve the cavitation performance of hydraulic machinery in the design stage, the response surface analysis method is used to study the influence of cascade density on the hydraulic characteristics and cavitation characteristics of a three-d...
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Rafel Roig, Xavier Sánchez-Botello, Berhanu Mulu, Carl-Maikel Högström and Xavier Escaler
The growing installation of intermittent renewable energy sources is forcing hydraulic turbines to work more frequently at speed no load when dangerous vaneless space vortex structures and stochastic flow phenomena can occur. An experimental campaign has...
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Alexey Abdrashitov, Alexander Gavrilov, Evgeny Marfin, Vladimir Panchenko, Andrey Kovalev, Vadim Bolshev and Julia Karaeva
One of the most well-known methods of intensifying the process of anaerobic digestion is the pretreatment of raw materials. For the first time, the use of a jet-driven Helmholtz oscillator for biomass pretreatment is proposed. The design of the device is...
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Yangjie Ren, Yitong Zhang, Shiyang Guo, Ben Wang, Siqi Wang and Wei Gao
Maize, a crop of international relevance, frequently undergoes xylem embolism due to water shortage, negatively impacting growth, yield, and quality. Consequently, a refined comprehension of xylem embolism is vital for enhancing maize cultivation. Notwit...
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Jiaqi Chen, Jieyun Mao, Hongbo Shi and Xikun Wang
In order to study the characteristics of a bidirectional shaft tubular pump with S-type symmetric airfoil blades, a prototype model was designed, manufactured, and tested. The energy characteristics, cavitation characteristics, and runaway characteristic...
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Ivan Stojnic, Michael Pfister, Jorge Matos and Anton J. Schleiss
Energy dissipators, such as stilling basins, are usually required at the toe of stepped chutes to achieve adequate and safe operation of the spillway. Stepped chute hydraulics has been extensively studied in last several decades, however, only limited kn...
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Hu Qixiang, Yang Yang, Shi Weidong, Cao Weidong and Shi Yansheng
Cavitation is regarded as a considerable factor causing performance deterioration of pumps under off-design conditions, especially at overload conditions. To investigate the unsteady cavitation evolution around the tongue of a pump volute, and its influe...
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Awais Raza, Wuyi Wan and Kashif Mehmood
Spillway is a crucial hydraulic structure used to discharge excess water from the dam reservoir. Air entrainment is essential to prevent cavitation damage on the spillway, however, without air entrainment the risk of cavitation over the spillway increase...
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Chenchen Zhang, Chenhang Zhu, Bin Meng and Sheng Li
As a core power component, aviation piston pumps are widely used in aircraft hydraulic systems. The piston pump?s power-to-weight ratio is extremely crucial in the aviation industry, and the ?ceiling effect? of the PV value (product of compressive stress...
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