Numerical analysis of density wave instability and heat transfer deterioration in a supercritical water reactor

被引：12
|
作者：
Upadhyay, Raghvendra [1 ]
Rai, Santosh Kumar [1 ]
Dutta, Goutam [1 ]
机构：
[1] PDPM Indian Inst Informat Technol Design & Mfg, Jabalpur 482005, Madhya Pradesh, India
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2018年 / 32卷 / 03期
关键词：
Density wave oscillation; Heat transfer deterioration; Thermal-hydraulics; Time domain analysis; LOOP; FLOW;
D O I：
10.1007/s12206-018-0208-7
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The present study numerically investigates Density wave oscillations (DWOs), a dynamic instability and captures Heat transfer deterioration (HTD) phenomenon for a Supercritical water reactor (SCWR) of the U. S. reference design. A Thermal-hydraulic (TH) model is employed to solve the nonlinearly coupled mass, axial momentum and energy conservation equations in a time domain using characteristics based implicit finite difference scheme accounting for the compressible flow dynamics of supercritical water. The analysis of DWOs is carried out to obtain the marginal stability thresholds. Next, the steady as well as transient safety analyses are carried out to determine the occurrence of HTD, access its severity and identify the safe operating conditions. Finally, the common operating conditions are predicted where the U. S. SCWR will be stable as well as safe.
引用
收藏
页码：1063 / 1070
页数：8
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