Evaluation of Pressure Drop Correlations for the Wire-wrapped Rod Bundles

2020 ◽  
Author(s):  
F. Heidet ◽  
S. Yoon
Keyword(s):  
Pressure Drop ◽  
Rod Bundles ◽  
The Wire

Measurement of Pressure Drop in a Liquid Metal Reactor Fuel Assembly

2002 ◽  
Author(s):  
Seok Ki Choi ◽  
Il Kon Choi ◽  
Kil Yong Lee ◽  
Ho Yun Nam ◽  
Jong Hyeun Choi ◽  
...  
Keyword(s):  
Experimental Data ◽  
Pressure Drop ◽  
Liquid Metal ◽  
Fuel Assembly ◽  
Diameter Ratio ◽  
Pressure Drops ◽  
Liquid Metal Reactor ◽  
The Wire ◽  
Measured Pressure ◽  
Reactor Fuel Assembly

An experimental study has been carried out to measure the pressure drop in a 271-pin fuel assembly of a liquid metal reactor. The rod pitch to rod diameter ratio (P/D) of the fuel assembly is 1.2 and the wire lead length to rod diameter ratio (H/D) is 24.84. Measurements are made for five different sections in a fuel assembly; inlet orifice, fuel assembly inlet, wire-wrapped fuel assembly, fuel assembly outlet and fuel assembly upper region. A series of water experiments have been conducted changing flow rate and water temperature. It is shown that the pressure drops in the inlet orifice and in the wire-wrapped fuel assembly are much larger than those in other regions. The measured pressure drop data in a wire-wrapped fuel assembly region is compared with the existing four correlations. It is shown that the correlation proposed by Cheng and Todreas fits the best with the present experimental data among the four correlations considered.

scholarly journals Pressure Drop Experiments using Tight-Lattice 37-Rod Bundles

2006 ◽  
Vol 43 (6) ◽  
pp. 699-706 ◽  
Author(s):  
Hidesada TAMAI ◽  
Masatoshi KURETA ◽  
Akira OHNUKI ◽  
Takashi SATO ◽  
Hajime AKIMOTO
Keyword(s):  
Pressure Drop ◽  
Rod Bundles ◽  
Tight Lattice

An Experimental and Numerical Study of Pressure Drop and Hydraulic Behavior in Scaled-Down Fuel Bundle

2013 ◽  
Vol 275-277 ◽  
pp. 409-412
Author(s):  
Duen Sheng Lee ◽  
Kai Ting Hsieh ◽  
Po Chih Tsao ◽  
Tzu Chen Hung ◽  
Yi Tung Chen ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Numerical Study ◽  
Spent Fuel ◽  
Rod Bundles ◽  
Cfd Simulations ◽  
Fuel Bundle ◽  
Acceptable Deviation ◽  
Spent Fuel Pool ◽  
Computational Fluid Dynamics Cfd ◽  
The Relationship

This study presents a scaled-down single fuel assembly experiment to simulate the fuel in the spent fuel pool (SFP). From experiment results, this study obtained the relationship among pressure drop and velocity, the viscous resistance and inertial resistance factor. In computational fluid dynamics (CFD) simulations, the large number of fuel rod bundles is approximated with porous medium technique that imposes similar flow resistance to the motion of the fluid. Difference of the pressure drop between numerical and experimental results is within acceptable deviation.

Hydrodynamics of Two-Phase Flow Across Horizontal In-line and Staggered Rod Bundles

1992 ◽  
Vol 114 (3) ◽  
pp. 450-456 ◽  
Author(s):  
R. Dowlati ◽  
A. M. C. Chan ◽  
M. Kawaji
Keyword(s):  
Pressure Drop ◽  
Void Fraction ◽  
Flow Model ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Gas Velocity ◽  
Rod Bundles ◽  
Two Phase ◽  
Friction Pressure Drop ◽  
Velocity Effect

The void fraction and friction pressure drop measurements have been made for vertical two-phase flow of air-water across staggered and in-line rod bundles with different pitch-to-diameter ratios. All void fraction data showed a strong mass velocity effect and were significantly less than the values predicted by a homogeneous flow model, but were well correlated using the dimensionless gas velocity, jg*. The two-phase friction multiplier data could be well correlated with the Martinelli parameter for G > 200 kg/m2s. The correlations developed for void fraction and two-phase friction multiplier were successfully tested in predicting the total pressure drop in boiling R-113 experiments.

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