NUCLEAR TECHNIQUES, Volume. 48, Issue 6, 060012(2025)
Experimental study on friction and rod drop performance of CF2 fuel assembly under different eccentricity
Figures & Tables(9)
Fig. 5. Friction force curves in motionless water under different eccentricity
Fig. 6. Parameter curves of rod drop in motionless water under the eccentricity of 4.67 mm
Table 1. Parameter list of experiment circuit
View tableView in ArticleTable 1. Parameter list of experiment circuit
序号
Serial
number
参数名称
Parameter name
参数范围
Parameter range
一次表
Original meter
1 温度
Temperature
0~200 ℃ 一体化热电阻
SBWZ
2 压力
Pressure
0~10 MPa 压力变送器
EJA transmitter
3 摩擦力
Friction
0~1 000 N 电子测力仪
Dynamometer
Table 2. Friction force under different eccentricity and height
View tableView in ArticleTable 2. Friction force under different eccentricity and height
h / mm δ / mm 0 δ1 …… δmax=9.4 0 F(0，0) F(δ1，0) …… F(δmax，h1) h1 F(0，h1) F(δ1，h1) …… F(δmax，h1) h2 F(0，h2) F(δ1，h2) …… F(δmax，h2) …… …… …… …… …… hmax F(0，hmax) F(δ1，hmax) …… F(δmax，hmax)
Table 3. Drop performance under different eccentricity
View tableView in ArticleTable 3. Drop performance under different eccentricity
序号
Serial number
错对中值
Eccentricity
/ mm
最大速度
Maximum speed
/ m s-1
到缓冲口时间
Time of reaching
the buffer port / s
缓冲时间
Buffering time
/ s
落棒总时间
Total time of drop
ing the rod / s
1 0.00 3.86 1.049 0.428 1.477 2 4.67 3.77 1.065 0.438 1.503 3 6.00 3.71 1.082 0.452 1.534 4 9.40 3.57 1.183 0.406 1.589
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Yunsheng WANG, Haijie QING, Wen ZHU, Linhai XIAO, Changhua NIE, Xuelian TIAN, Xinguang MA, Tianjiao SHI, Fujin CHEN. Experimental study on friction and rod drop performance of CF2 fuel assembly under different eccentricity[J]. NUCLEAR TECHNIQUES, 2025, 48(6): 060012
Paper Information
Category: Special Topics of Academic Papers at The 27th Annual Meeting of the China Association for Science and Technology
Received: Jul. 2, 2024
Accepted: --
Published Online: Jul. 25, 2025
The Author Email: Fujin CHEN (陈夫进)
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