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Wenbo Shi, Heng Zhang and Yuanxiang Li
The slots on a blade tip can effectively suppress the tip vortices by diffusing the core structure of a vortex and thus mitigate the adverse impacts of vortex interactions. In this paper, the effect of a slotted tip on vortex diffusion in the hovering st...
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Wenbo Shi, Heng Zhang and Yuanxiang Li
The accurate prediction of blade tip vortices continues to be challenging for the investigation of rotor aerodynamics. In the current work, the blade tip vortex system of a Caradonna?Tung rotor in the hovering state is simulated on account of the framewo...
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Stefano Gaggero and Marco Ferrando
Tip loading is a common strategy to increase the propulsive efficiency of propellers. Solutions such as contracted and tip-loaded (CLT) and ?New generation? CLT propellers exploit the presence of an endplate (?true? or as the result of a dedicated modifi...
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Chankyu Son and Taewoo Kim
A novel actuator disk model (ADM) coupled with lifting-line theory is proposed in this paper. Several virtual planform blades are placed on a disk plane with a constant azimuthal interval, and the lifting-line theory is applied to each blade to predict t...
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Haigang Wen, Luyao Li, Guangtai Shi, Haijun Ma and Xiaodong Peng
A spiral axial-flow blade pump (SABP), as the core piece of equipment in the oil and natural gas closed-gathering and transportation process, can not only transport gas?liquid mixtures with a high gas content, but can also transport gas?liquid?solid mixt...
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Yingjie Chen, Le Cai, Dengyu Jiang, Yiyi Li and Songtao Wang
Experimental and numerical studies of a linear high-loaded turbine cascade with a dual-cavity tip structure are presented in this paper. The experimental conditions contained an increase in the outlet Mach number from 0.42 to 0.92, a change in the incide...
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Haigang Wen, Wenjuan Lv and Guangtai Shi
A spiral axial-flow blade pump (SABP) is an indispensable device in the closed gathering and transporting technology of oil and natural gas exploitation; it can not only transport a gas?liquid mixture with a high gas content, but also transport a gas?liq...
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Ranieri Emanuele Nargi, Paolo Candeloro, Fabrizio De Gregorio, Giuseppe Ceglia and Tiziano Pagliaroli
An investigation of twin corotating rotors? interaction effects was performed by load (thrust and torque) measurements, flow field dynamics through Time-Resolved Particle Image Velocimetry, and acoustic emissions using a microphone array. Two rotors, eac...
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Hua-Dong Yao, Zhongjie Huang, Lars Davidson, Jiqiang Niu and Zheng-Wei Chen
We study noise generation at the blade tips of propellers designed for future electric aircraft propulsion and, furthermore, analyze the interrelationship between noise mitigation and aerodynamics improvement in terms of propeller geometric designs. Clas...
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Dipali Ghodake, Marlène Sanjosé, Stéphane Moreau and Manuel Henner
The effect of blade sweep has been studied numerically with the Lattice Boltzmann Method on a family of low-speed free-vortex axial fans with sweeps of ±45°. Good overall aerodynamic agreement is first demonstrated on all fans at the design condition, pa...
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