Rotational manipulation by acoustic radiation torque of high-order vortex beams generated by an artificial structured plate

2018 ◽  
Vol 113 (5) ◽  
pp. 051902 ◽  
Author(s):  
Weiping Li ◽  
Manzhu Ke ◽  
Shasha Peng ◽  
Fengming Liu ◽  
Chunyin Qiu ◽  
...  
Keyword(s):  
Acoustic Radiation ◽  
High Order ◽  
Vortex Beams

Propagation and Polarization Characteristics of the Radially Polarized High-order Bessel-Gaussian Vortex Beams

2018 ◽  
Vol 47 (7) ◽  
pp. 708001
Author(s):  
刘永欣 LIU Yong-xin ◽  
张凯宁 ZHANG Kai-ning ◽  
蒲继雄 PU Ji-xiong
Keyword(s):  
High Order ◽  
Polarization Characteristics ◽  
Vortex Beams ◽  
Radially Polarized

scholarly journals Realizing High-order Bessel Vortex Beams with High-level Phase Holograms

2019 ◽  
Vol 569 ◽  
pp. 032039
Author(s):  
Zhongsheng Zhai ◽  
Jiaojie Huang ◽  
Zhuang Cheng ◽  
Qinghua Lv ◽  
Xuanze Wang
Keyword(s):  
High Order ◽  
Vortex Beams ◽  
High Level ◽  
Phase Holograms

scholarly journals Vectorial control of nonlinear emission via chiral butterfly nanoantennas: generation of pure high order nonlinear vortex beams

2017 ◽  
Vol 25 (3) ◽  
pp. 2569 ◽  
Author(s):  
Antonino Cala’ Lesina ◽  
Pierre Berini ◽  
Lora Ramunno
Keyword(s):  
High Order ◽  
Vortex Beams

Combination of high order polarization vortex beams using Hermite–Gauss beams

2018 ◽  
Vol 50 (4) ◽  
Author(s):  
Jing-tao Xin ◽  
Ming-li Dong ◽  
Xiao-ping Lou ◽  
Lian-qing Zhu
Keyword(s):  
High Order ◽  
Vortex Beams ◽  
Polarization Vortex

Validation of a High-Order Large Eddy Simulation Solver for Acoustic Prediction of Supersonic Jet Flow

2020 ◽  
Vol 28 (03) ◽  
pp. 1950023
Author(s):  
Weiqi Shen ◽  
Steven A. E. Miller
Keyword(s):  
Large Eddy Simulation ◽  
Large Scale ◽  
Acoustic Radiation ◽  
Supersonic Jet ◽  
High Order ◽  
High Order Accuracy ◽  
Order Of Accuracy ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Mixing Noise

A high-order large eddy simulation (LES) code based on the flux reconstruction (FR) scheme is further developed for supersonic jet simulation. The FR scheme provides an efficient and easy-to-implement way to achieve high-order accuracy on an unstructured mesh. The order of accuracy and the shock capturing capability of the solver are validated with the isentropic Euler vortex and Sod’s shock tube problem. A heated under-expanded supersonic jet case from NASA’s Small Hot Jet Acoustic Rig (SHJAR) database is used for validation. The turbulence statistics along the nozzle centerline and lip-line are examined. We predict the acoustic radiation with the Ffowcs Williams and Hawkings method, which is integrated with our solver. The far-field acoustic predictions show reasonable agreement with the experimental measurement in the upstream and downstream directions, where the shock-associated noise and the large-scale turbulent mixing noise are dominant, respectively.

scholarly journals Tunable Beam Steering, Focusing and Generating of Orbital Angular Momentum Vortex Beams Using High-Order Patch Array

2019 ◽  
Vol 9 (15) ◽  
pp. 2949 ◽  
Author(s):  
Zhiping Yin ◽  
Qun Zheng ◽  
Kai Guo ◽  
Zhongyi Guo
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Phase Modulation ◽  
Beam Steering ◽  
Phase Shifters ◽  
High Order ◽  
Scanning Angle ◽  
Beam Focusing ◽  
Vortex Beams ◽  
Topological Charges

In this paper, a tunable patch array based on high-order is proposed at the frequency of 300 GHz, achieving active controllable beam steering, focusing and generation of orbital angular momentum vortex beams. It has been demonstrated that the patch array can achieve wide beam scanning angle by controlling the phase of array elements with tunable phase shifters. Meanwhile, beam focusing on the specified position can also be realized by phase modulation of array elements based on the focusing theory. In addition, we also designed a patch array to generate vortex beams with multiple topological charges by high-order modes. The performances show that the patch antenna array we designed has a good application prospect.

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