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Ferenc Szlivka, Csaba Hetyei, Gusztáv Fekete and Ildikó Molnár
Nowadays, there are numerous new features available in CFD (computational fluid dynamics) that can simulate complex physical phenomena, which used to be challenging to address. However, in current CFD software, certain problems can be simulated using dif...
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M. R. Ajith Kumar, Jaan H. Pu, Prashanth R. Hanmaiahgari and Martin F. Lambert
A problem with 1-D water hammer modelling is in the application of accurate unsteady friction. Moreover, investigating the time response of fluid dynamics and unsteady turbulence structures during the water hammer is not possible with a 1-D model. This r...
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Ruixuan He, Xinjing Wang, Jian Li, Xiaodong Liu and Baowei Song
Recently, inspired by the flippers of humpback whales, researchers have been widely studying leading-edge tubercles for use as passive flow control devices. In this research, we numerically investigated the effects of leading-edge tubercles on a three-di...
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Junjie Wang, Renliang Chen and Jiaxin Lu
The ducted coaxial propeller (DCP) has great application value in eVTOL aircraft because of its high safety, compactness, and low noise. A numerical simulation method for the DCP is established using the sliding mesh technique. A DCP was designed and man...
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Hongming Cai, Zhuoran Zhang and Shuanghou Deng
Recently, ducted fan unmanned aerial vehicles (UAVs) have attracted considerable attention due to their potential for application in both civil and military missions. Compared with free propellers, the presence of duct can in principle decrease the flow ...
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Jiahao Guo and Zhou Zhou
In order to improve the design accuracy of the blade design method of a ducted fan based on the blade element momentum theory, the design was modified by the CFD calculation with higher accuracy to propose an integrated and efficient design method for th...
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Lin Hong, Xin Wang, Desheng Zhang and Hang Xu
Hydrodynamic coefficient estimation is crucial to the shape design, dynamic modeling, and control of underwater vehicles. In this paper, we conduct a numerical study on the hydrodynamic coefficient estimation of an underactuated underwater vehicle (actua...
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Zhitao Zhang, Changchuan Xie, Kunhui Huang and Chao Yang
This paper gives a quantitative account of the influence of slipstream on the aerodynamic performance of a contrarotating propeller (CRP)/wing system, and compares it with the CRP and clean wing. To accurately evaluate the complex aerodynamic interaction...
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Jun Wei, Yong-Bai Sha, Xin-Yu Hu, Jin-Yan Yao and Yan-Li Chen
A trans-medium aircraft is a new concept aircraft that can both dive in the water and fly in the air. In this paper, a new type of water?air multi-medium span vehicle is designed based on the water entry and exit structure model of a multi-rotor UAV. Bas...
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Changzhe Chen, Lu Zou, Zaojian Zou and Haipeng Guo
Propeller modeling in virtual captive model tests is crucial to the prediction accuracy of ship maneuvering motion. In the present study, the Computational Fluid Dynamics (CFD) method with two propeller modeling methods, Sliding Mesh (SM) and Multiple Re...
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