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Mengke Wang, Wenbo He, Minqi Wang, Jine Cao and Pinlu Cao
Due to its high mechanical penetration rate and lack of pollution of the environment, air reverse circulation drilling is considered to be a promising method for ice drilling. The air reverse circulation is caused by the combination of the ejector and th...
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Tingli Wang, Jian Huang, Hongyuan Fu, Ke Yu and Shan Yao
The quality of high-pressure die casting (HPDC) is largely determined by the process parameters. The objective is to study the influence of process parameters on melt filling and feeding capacity. The research is carried out by means of numerical simulat...
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Najam us Saqib, Muhammad Akbar, Huali Pan, Guoqiang Ou, Muhammad Mohsin, Assad Ali and Azka Amin
In this study, curved risers stepped spillways models based on the increasing angle of suspension were tested to check for improvement in energy dissipation and pressure distributions. Four fourteen-steps stepped spillway models with a slope 1:0.84 were ...
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He Li, Xiaodong Wang, Jiuxin Ning, Pengfei Zhang and Hailong Huang
This paper investigated the effect of air leaking into the working fluid on the performance of a steam ejector. A simulation of the mixing of air into the primary and secondary fluids was performed using CFD. The effects of air with a 0, 0.1, 0.3 and 0.5...
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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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Minquan Liao, Qiaorui Si, Meng Fan, Peng Wang, Zhonghai Liu, Shouqi Yuan, Qianglei Cui and Gérard Bois
Results on overall pump head and efficiency performance, pressure pulsation and high speed camera visualization of flow patterns behavior are presented for different inlet air-water void fractions at a given rotational speed. With the increase of inlet v...
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Ali Bahadar
Among various mechanisms for enhancing the interfacial area between gases and liquids, a vertical liquid jet striking a still liquid is considered an effective method. This method has vast industrial and environmental applications, where a significant ap...
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Khaled Yousef, Ahmed Hegazy and Abraham Engeda
An experimental and numerical study is presented in the current work for gas entrainment using an inverted vertical U-tube. Water flows vertically up in an inverted U-tube which creates a low-pressure region in the tube upper portion. This low-pressure r...
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Sergey V. Isaenkov, Ivan S. Vozhakov, Mikhail V. Cherdantsev, Dmitry G. Arkhipov and Andrey V. Cherdantsev
The complex wave structure of annular gas?liquid flow with disturbance waves and liquid entrainment is a result of the evolution of high-frequency initial waves, appearing at the very inlet of the flow, prior to the hydrodynamic stabilization of liquid f...
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Juan José Rebollo, David López, Luis Garrote, Tamara Ramos, Rubén Díaz and Ricardo Herrero
Energy dissipation structures play an important role in flood risk management. Many variables need to be considered for the design of these structures. Aeration has been one of the more studied phenomena over the last years, due to its influence in the p...
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