scholarly journals Feasibility of Using Lateral Mode Coupling Method for a Large Scale Ultrasound Phased Array for Noninvasive Transcranial Therapy

2010 ◽  
Vol 57 (1) ◽  
pp. 124-133 ◽  
Author(s):  
Junho Song ◽  
Kullervo Hynynen
Keyword(s):  
Mode Coupling ◽  
Large Scale ◽  
Phased Array ◽  
Coupling Method ◽  
Lateral Mode

A High Effective Parallel Method for the Coupling Between Neutronics and Thermal-Hydraulic

2016 ◽  
Author(s):  
Xiaomeng Dong ◽  
Zhijian Zhang ◽  
Zhaofei Tian ◽  
Lei Li ◽  
Guangliang Chen
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Large Scale ◽  
Nuclear Reactor ◽  
Reactor Core ◽  
Decisive Role ◽  
Reactor Power ◽  
Coupling Method ◽  
Outlet Temperature

Multi-physics coupling analysis is one of the most important fields among the analysis of nuclear power plant. The basis of multi-physics coupling is the coupling between neutronics and thermal-hydraulic because it plays a decisive role in the computation of reactor power, outlet temperature of the reactor core and pressure of vessel, which determines the economy and security of the nuclear power plant. This paper develops a coupling method which uses OPENFOAM and the REMARK code. OPENFOAM is a 3-dimension CFD open-source code for thermal-hydraulic, and the REMARK code (produced by GSE Systems) is a real-time simulation multi-group core model for neutronics while it solves diffusion equations. Additionally, a coupled computation using these two codes is new and has not been done. The method is tested and verified using data of the QINSHAN Phase II typical nuclear reactor which will have 16 × 121 elements. The coupled code has been modified to adapt unlimited CPUs after parallelization. With the further development and additional testing, this coupling method has the potential to extend to a more large-scale and accurate computation.

Research on FBG-based longitudinal-acousto-optic modulator with Fourier mode coupling method

2012 ◽  
Vol 51 (30) ◽  
pp. 7314 ◽  
Author(s):  
Zhuoxuan Li ◽  
Li Pei ◽  
Chao Liu ◽  
Tigang Ning ◽  
Shaowei Yu
Keyword(s):  
Mode Coupling ◽  
Coupling Method ◽  
Fourier Mode ◽  
Acousto Optic Modulator

Ultrasonic Testing of Railway Transport Units with Phased Array Flaw Detectors

NDT World ◽  
2015 ◽  
Vol 18 (3) ◽  
pp. 72-76 ◽  
Author(s):  
Макарова ◽  
Taisiya Makarova ◽  
Мелешко ◽  
Nataliya Meleshko ◽  
Жаринов ◽  
...  
Keyword(s):  
Large Scale ◽  
Phased Array ◽  
Phased Arrays ◽  
Surface Profile ◽  
Piezoelectric Transducers ◽  
Back Surface ◽  
Railway Transport ◽  
Transverse Cracks ◽  
Testing Procedures ◽  
Standard Testing

The article describes possibilities of phased array flaw detectors application for testing of railway transport units, such as wheel set axles, all-rolled wheels, solebars of freight cars. The task was to reproduce the standard testing procedures using phased array flaw detectors and demonstrate their advantages in visibility, efficiency, repeatability, results validity. Unfortunately, one of the main advantages of phased array flaw detectors, namely – a possibility to control the focusing depth – are lost while testing of large scale objects. Sector scanning technique with the phased array flaw detectors OmniScan and Isonic 2010 in the minimum configuration was used for the research. In the all cases acoustical images of the following reflectors were obtained within the range of selected angles: saw-cuts in axles, spot-drillings and saw-cuts in wheels, side drilled holes and natural defects in solebars. The Multi Group software (Isonic 2000) at testing of wheel set axles has enabled the testing schemes to be realized with one prism and one phased array instead of several classical piezoelectric transducers. Circumferential testing of all-rolled wheels from internal lateral surface under the roll surface level has allowed transverse cracks and flange embedded defects to be detected. Solebar testing has been more complicated because of a form and irregularity of scanning surface, necessity of its cleaning and a complex profile of back surface. Nevertheless the usage of phased array flaw detectors has made it possible to identify the back surface profile. Application of phased arrays substantially increases testing efficiency and improves visibility of obtained results.

Large-scale silicon photonic phased array chip for single-pixel ghost imaging

2019 ◽  
Author(s):  
Yusuke Kohno ◽  
Kento Komatsu ◽  
Yasuyuki Ozeki ◽  
Yoshiaki Nakano ◽  
Takuo Tanemura
Keyword(s):  
Large Scale ◽  
Phased Array ◽  
Ghost Imaging ◽  
Silicon Photonic ◽  
Single Pixel
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