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Jason Cornelius, Sven Schmitz, Jose Palacios, Bernadine Juliano and Richard Heisler
This work details the development and validation of a methodology for high-resolution rotor models used in hybrid Blade Element Momentum Theory Unsteady Reynolds Averaged Navier?Stokes (BEMT-URANS) CFD. The methodology is shown to accurately predict sing...
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Xinlei Duan, Jianlong Chang, Guangsong Chen, Taisu Liu and He Ma
The use of film cooling technology is one of the most effective ways to minimize the damage to wall materials caused by the high-temperature environment in a ramjet. Optimization of the design to achieve the highest film cooling efficiency on the hot wal...
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Donglong Zhou, Jianlong Chang and Huawei Shan
In the combustion chamber of scramjets, fuel jets interact with supersonic airflow in the form of a liquid jet in crossflow (LJIC). It is difficult to achieve adequate jet?crossflow mixing and the efficient combustion of fuel in an instant. Large eddy si...
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Mingchang Fang, Yanrong Wang, Xianghua Jiang and Peng Tan
The tubed vortex reducer in the axial compressor can destroy the vortex in the disk cavity, by a thin-walled tube, to reduce the total pressure loss. The tube may suffer from vibration problems, such as flutter and forced vibration, which are closely rel...
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Wenqiang Dong, Ligang Yao and Weilin Luo
A model of a submerged angular cavitation nozzle is established, which consists of a contraction part, parallel middle part, and expansion part. Based on the CFD technique, a numerical simulation of the flow field of the submerged cavitation nozzle is ca...
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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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Pavel Makeev, Yuri Ignatkin and Alexander Shomov
Numerical studies of the aerodynamic characteristics of the coaxial main rotor of the Kamov Ka-32 helicopter in steep descent modes, including the area of the vortex ring state (VRS) modes, have been performed. Used in this paper is an original free vort...
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Wei Wang, Xi Wang, Zhengwei Wang, Mabing Ni and Chunan Yang
The instability of the no-load working condition of the pump turbine directly affects the grid connection of the unit, and will cause vibration and damage to the components of the unit in severe cases. In this paper, a three-dimensional full flow numeric...
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Hao Zhang, Xinzhong Li, Haixiang Ma, Miaomiao Tang, Hehe Li and Yangjian Cai
We report on a novel optical vortex, named as centrosymmetric optical vortex (CSOV), which is constructed via four conventional optical vortices (OVs) with different topological charges (TCs). The orbital angular momentum (OAM) density satisfies centrosy...
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Peter F. Pelz, Paul Taubert and Ferdinand-J. Cloos
This paper models the kinematics of the vortex system of an encased axial turbomachine at part load and overload applying analytical methods. Thus far, the influence of the casing and the tip clearance on the kinematics have been solved separately. The v...
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