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Chi Zhang, Yaguo Lyu, Le Jiang and Zhenxia Liu
The numerical simulation method was used to investigate the deflection and deformation process of a circular lubricating oil jet in transverse shear airflow. The numerical model was compared and validated against the experimental data. The physical param...
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Yanfang Liu, Guocui Wang, Xianna Zhang, Hongchen Li, Bingcheng Si, Wenqian Liu and Zhenhua Zhang
The indefinite characteristics of gas?liquid two-phase flow limit the usage of aerated drip irrigation. Gas?liquid two-phase flow in a labyrinth channel was observed using a particle tracking velocimetry (PTV) technique in this study. The motion trajecto...
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Lorenzo Casalino, Andrea Ferrero, Filippo Masseni and Dario Pastrone
Hybrid rocket engines are a green alternative to solid rocket motors and may represent a low-cost alternative to kerosene fueled rockets, while granting performance and control features similar to that of typical storable liquid rocket engines. In this w...
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Xuanye Liang, Lijun Yang, Gaofeng Wang and Jingxuan Li
The bifurcation process of self-sustained combustion instability pressure perturbations in a liquid rocket combustor is investigated based on the Helmholtz equations and a pressure dependent flame describing function. The modal frequency and growth rates...
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Lorenzo Casalino, Filippo Masseni and Dario Pastrone
An electrically driven pump-fed cycle for a hybrid rocket engine is proposed and compared to a simpler gas-pressurized feed system. A liquid-oxygen/paraffin-based fuel hybrid rocket engine which powers the third stage of a Vega-like launcher is considere...
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Weidong Cao, He Wang and Jian Tang
Guide vane submersible centrifugal pumps are a kind of submersible pump, and the fluid inside the pump is often mixed with gravel and other impurities during operation, affecting the pump?s operating efficiency and life expectancy. However, past studies ...
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Yang Liu, Xintong Li, Pengcheng Wang, Xiaotian Zhang, Hao Zhu and Guobiao Cai
This paper proposed a multi-objective, multi-disciplinary design optimization and multi-attribute evaluation method for the manned lunar lander descent stage. A system design model is established considering multiple disciplines such as propulsion, struc...
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Chao Ning, Yalin Li, Ping Huang, Hongbo Shi and Haichao Sun
Centrifugal pumps are the critical components in deep-sea mining. In order to investigate the particle motion in the curved channel of the impeller, three different types of curvature conform to blade profile to simplify the impeller design of pumps. A n...
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Hu Zhang, Jun Wang, Desheng Zhang, Weidong Shi and Jianbo Zang
To understand the effect of cavitation on the tip leakage vortex (TLV), turbulent cavitating flows were numerically investigated using the shear-stress transport (SST) k?? turbulence model and the Zwart?Gerber?Belamri cavitation model. In this work, two ...
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Sergey Y. Misyura, Vladimir S. Morozov and Oleg A. Gobyzov
The regularities of the processes and characteristics of convection in a sessile drop on a hot wall after the second drop fall are investigated experimentally. The movement of a particle on a drop surface under the action of capillary force and liquid co...
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Giovanna Grossi, Amerigo Lendvai, Giovanni Peretti, Roberto Ranzi
Pág. 1 - 14
Precipitation measurements by rain gauges are usually affected by a systematic underestimation, which can be larger in case of snowfall. The wind, disturbing the trajectory of the falling water droplets or snowflakes above the rain gauge, is the major so...
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