Simulation of a solid-phase oxygen control scheme in lead-bismuth eutectic system

被引：3

作者：

Wang, Yifeng ^{[1
]}

Li, Xiaobo ^{[1
]}

Liang, Ruixian ^{[1
]}

Zhu, Huiping ^{[1
]}

Liu, Fang ^{[1
]}

Liu, Yang ^{[1
]}

Niu, Fenglei ^{[1
]}

机构：

[1] North China Elect Power Univ, Sch Nucl Sci & Engn, Beijing 102206, Peoples R China

来源：

NUCLEAR ENGINEERING AND DESIGN | 2022年 / 394卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

LBE; Solid-phase oxygen control; DEM-CFD; Randomly packed bed; Lead oxide mass exchanger; HEAT-TRANSFER ANALYSIS; PRESSURE-DROP; MASS-TRANSFER; PACKED-BEDS; CFD SIMULATION; FLUID-FLOW; FIXED-BEDS; REACTOR; SPHERES; CONTACT;

D O I：

10.1016/j.nucengdes.2022.111821

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

It is known that solid-phase oxygen control scheme is one of the important methods to solve the corrosion problem when we choose lead-bismuth eutectic (LBE) as coolant in lead-cooled fast reactor (LFR) or Accelerator Driven System (ADS). The mass-exchanger (MX), a porous chamber filled with mechanically stable lead oxide (PbO spheroids), is the key component of solid-phase oxygen control. In order to study the characteristics of oxygen mass transfer, pressure drop, flow field and oxygen concentration field in MX, a randomly packed bed model is established using DEM method. The fluid domain is meshed with computational fluid dynamics (CFD) code STAR-CCM +. The particle-particle and wall-particle contact points are modified with short cylinder bridges to improve the cell qualities. The mass transfer boundary layer theory is applied to explain the oxygen supply process of PbO sphere dissolution to LBE. The results of the average porosity, radial porosity distribution and pressure drop match the previous literature pretty well. The CFD results related to Sherwood number (Sh) are validated by CRAFT experimental data with an acceptable error. The law of oxygen transfer and distribution is obtained by studying the CFD contours and the spatial distribution of oxygen concentration and velocity data. The temperature dependence and velocity dependence of Sherwood number are obtained through multiple linear regression processing of CFD data. Finally, the effects of different temperatures and mass flow rates on oxygen concentration and pressure drop are evaluated to determine the suitable operating domain for MX.

引用

页数：11

共 42 条

[11] The influence of confining walls on the pressure drop in packed beds [J].

Eisfeld, B ;

Schnitzlein, K .

CHEMICAL ENGINEERING SCIENCE, 2001, 56 (14) :4321-4329

[12] DEM-CFD simulations of fixed bed reactors with small tube to particle diameter ratios [J].

Eppinger, T. ;

Seidler, K. ;

Kraume, M. .

CHEMICAL ENGINEERING JOURNAL, 2011, 166 (01) :324-331

[13]

ERGUN S, 1952, CHEM ENG PROG, V48, P89

[14]

Fazio C., 2015, Handbook on lead-bismuth eutectic alloy and lead properties, materials compatibility, thermal-hydraulics and technologies-2015 Edition (No. NEA-7268)

[15]

Jeschar R., 1964, Archiv fur das Eisenhuttenwesen, V35, P91, DOI [10.1002/srin.196402300, DOI 10.1002/SRIN.196402300]

[16]

Kritschke A., 2001, THESIS MUNCHEN

[17] Numerical treatment of pebble contact in the flow and heat transfer analysis of a pebble bed reactor core [J].

Lee, Jung-Jae ;

Park, Goon-Cherl ;

Kim, Kwang-Yong ;

Lee, Won-Jae .

NUCLEAR ENGINEERING AND DESIGN, 2007, 237 (22) :2183-2196

[18] Lead-alloy coolant technology and materials - technology readiness level evaluation [J].

Li, Ning .

PROGRESS IN NUCLEAR ENERGY, 2008, 50 (2-6) :140-151

[19] GEN-IV LFR development: Status & perspectives [J].

Lorusso, Pierdomenico ;

Bassini, Serena ;

Del Nevo, Alessandro ;

Di Piazza, Ivan ;

Giannetti, Fabio ;

Tarantino, Mariano ;

Utili, Marco .

PROGRESS IN NUCLEAR ENERGY, 2018, 105 :318-331

[20]

Ma J., 2005, SOLID PHASE OXYGEN C

← 1 2 3 4 5 →