Experimental study on the transverse mixing of 5 × 5 helical cruciform fuel assembly by wire mesh sensor

2021 ◽  
Vol 164 ◽  
pp. 108582
Author(s):  
Qi Zhang ◽  
Li Liu ◽  
Yao Xiao ◽  
Junsen Fu ◽  
Hanyang Gu
Keyword(s):  
Experimental Study ◽  
Fuel Assembly ◽  
Wire Mesh ◽  
Transverse Mixing

Transient Boiling and Cross Flow in 5×5 Rod Bundle With Rapid Heating

2018 ◽  
Author(s):  
Hiroki Takiguchi ◽  
Masahiro Furuya ◽  
Takahiro Arai ◽  
Kenetsu Shirakawa
Keyword(s):  
Fuel Assembly ◽  
Heat Generation ◽  
Cross Flow ◽  
Nuclear Safety ◽  
Wire Mesh ◽  
Coolant Temperature ◽  
Heat Output ◽  
Rod Bundle ◽  
Test Loop ◽  
The Cross

Rapid thermal elevation in nuclear reactor is an important factor for nuclear safety. It is indispensable to develop a three-dimensional nuclear thermal transient analysis code and confirm its validity in order to accurately evaluate the effectiveness of the running nuclear safety measures when heating power of reactor core rapidly rises. However, the heat transfer characteristics such as reactivity feedback characteristics due to moderator density and the technical knowledge explaining the uncertainty are insufficient. In particular, the cross propagation behavior of vapor bubble (void) in cross section of fuel assembly is not grasped. This study evaluates the cross propagation void behavior in a simulated fuel assembly at time of rapid heat generation with a thermal hydraulic test loop including a 5 × 5 rod bundle having the heat generation profile in the flow cross sectional direction. In this paper, the branching heat output condition of transient cross propagation was investigated from visualization of high speed video camera and void fraction measurement by wire mesh sensor with the inlet flow rate 0.3m/s and the inlet coolant temperature 40°C, which are based on the transient safety analysis condition. In addition, we applied the particle imaging velocimetry (PIV) technique to measure liquid-phase velocity profile of the coolant in the transient cross flow and experimentally clarified the relationship with the cross flow.

scholarly journals Experimental study on the performance of flat air collector with reticulated endothermic body

2020 ◽  
Vol 165 ◽  
pp. 01025
Author(s):  
Liang Hong ◽  
Han Zhiguo ◽  
Wang Jing ◽  
Duli Kunjiang ◽  
Li Zhiyong
Keyword(s):  
Experimental Study ◽  
Flow Rate ◽  
Temperature Difference ◽  
Collection Efficiency ◽  
Air Flow ◽  
Wire Mesh ◽  
Pore Density ◽  
Air Flow Rate ◽  
Flow Temperature ◽  
Mesh Density

Because the flat air collector is simple in structure, reliable in operation, and resistant to cold and frost, it is more suitable for applications such as building heating. This paper presents a flat air collector with a mesh heat sink, and analyzes the effects of air flow, temperature difference between inlet and outlet, and wire mesh density on the heat collection efficiency of the collector. The results show that when the pore density is fixed, the heat collection efficiency increases with the increase of air flow rate, which is 10% higher than that of natural convection when the air flow rate is maximum; when the air flow rate is fixed, the heat collection efficiency increases with the increase of the pore density and the temperature difference between the inlet and outlet, which can be increased by 10% -20%.

Experimental study of a free piston Stirling cooler with wound wire mesh regenerator

Energy ◽  
2021 ◽  
pp. 121287
Author(s):  
Yunhao Cui ◽  
Jianxin Qiao ◽  
Bin Song ◽  
Xiaotao Wang ◽  
Zhaohui Yang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Wire Mesh ◽  
Free Piston

Experimental study of pressure drops through LOCA-generated debris deposited on a fuel assembly

2015 ◽  
Vol 289 ◽  
pp. 49-59 ◽  
Author(s):  
Jeong Kwan Suh ◽  
Jae Won Kim ◽  
Sun Guk Kwon ◽  
Jae Yong Lee ◽  
Hyoung Kyu Cho ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fuel Assembly ◽  
Pressure Drops

Seismic Resistance of Unreinforced Brick Masonry Buildings: An Experimental Study

2011 ◽  
Vol 255-260 ◽  
pp. 2622-2626 ◽  
Author(s):  
Azmat Ullah ◽  
Khan Shahzada ◽  
Akhtar Naeem Khan ◽  
Amjad Naseer ◽  
Mohammad Ashraf ◽  
...  
Keyword(s):  
Experimental Study ◽  
Axial Compression ◽  
Rice Husk ◽  
Brick Masonry ◽  
Experimental Results ◽  
Wire Mesh ◽  
Seismic Resistance ◽  
Masonry Buildings ◽  
Wall Surface ◽  
Diagonal Compression

This paper presents a study on seismic resistance of typical single and double storey masonry buildings constructed in the southern districts of Pakhthunkhwa, Pakistan. Two types of bricks; wooden and rice husk burnt bricks, have been investigated in combination with mud and cement-sand mortar. Plane and reinforced specimens have been tested in axial compression and diagonal compression. Analysis of the experimental results show that both single and double storey buildings constructed in the study area with mud mortar and mud plaster are seismically vulnerable. However application of the wire mesh on wall surface subsequently plastered increases the strength significantly and make the structure resistant to the earthquake forces.

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