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Yadong Zhu, Haifeng Jiao, Shihui Wang, Wenbo Zhu, Mengcheng Wang and Songshan Chen
In order to study the pressure pulsation characteristics and structural dynamic response characteristics of a vertical shaft cross-flow pump, this study used a computational fluid dynamics (CFD) numerical simulation method to analyze the pressure pulsati...
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Yu Wang, Wenhang Zhang, Xiwen Luo, Ying Zang, Ligang Ma, Wenpeng Zhang, Jiahao Liu and Shan Zeng
The air-suction precision seeder for small seeds is a planting machine, characterized by precision, high efficiency, and ease of operation, that uses air suction technology to sow small grain seeds at set intervals and depths into the soil. However, the ...
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Haoran Pan, Wei Li, Kaikai Luo, Rui Wang, Liesheng Xiao and Zeqing Lian
Gas fuel control valves play important roles in the control of gas flow in high-precision gas turbines. To clarify the influence of coupling between the structure and the fluid system, a thermal fluid?solid coupling mechanism is presented based on numeri...
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Qi Liu, Juanmian Lei, Yong Yu and Jintao Yin
Obvious aeroelastic deformation occurs in spinning projectiles with large slenderness ratio, which seriously affects flight stability and maneuverability. This paper investigates the aeroelastic response of spinning projectiles with large slenderness rat...
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Jianming Kang, Chenshuo Xie, Qiangji Peng, Nannan Wang, Xiaoyu Wang and Yaoli Zhang
A tumbler screen-type residual film?impurity mixture wind separator is the key equipment for the secondary utilization of farmland residual film. During its operation, the proportion of impurities in the separated waste mulch film intermittently increase...
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Yu Zhang, Zuodong Jin, Yunlong Hou, Bingbing Han and Charles Ntakiyimana
Groundwater is abundant in soft soil areas, which has a significant impact on the excavation deformation of foundation pits. In this paper, based on the monitoring of deep foundation pits with waterproof curtains in Shanghai deep foundation pits, COMSOL ...
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Jiwei Tang, Weicheng Xie, Xiaoliang Wang and Cheng Chen
Based on the biaxial experiment data of the membrane material under hot and cold conditions, the mechanical properties calculation model of envelope material was established with consideration of the effects of varying stress ratios, stress magnitudes an...
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Fangfang Xu, Hong Li and Dongxu Zhang
The unstable combustion problem in small-sized solid rocket engines with a large aspect ratio is so complicated that its causes remain unclear. In this study, the coupled vibration between the sound field and shell in the engines was proposed as a possib...
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Yi Zhang, Xiangru Zhang, Wenda Zhao and Feng Hu
In order to study the similarity law of penetration of concrete targets by shaped charges, penetration tests of concrete targets with different sizes of shaped-charge jets were carried out, and the prototype and the model projectiles met the similarity l...
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Chunlong Ma, Dongyan Shi, Chao Li, Dongze He, Guangliang Li and Keru Lu
In this study, a compressible three-phase homogeneous model was established using ABAQUS/Explicit. These models can numerically simulate the pulsation process of cavitation bubbles in the free field, near the flat plate target, and near the curved bounda...
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