Improvement of RELAP5 code for density wave instability analysis in parallel narrow rectangular channels

2018 ◽  
Vol 122 ◽  
pp. 241-255 ◽  
Author(s):  
Qiang Lian ◽  
Wenxi Tian ◽  
Suizheng Qiu ◽  
Guanghui Su
Keyword(s):  
Density Wave ◽  
Wave Instability ◽  
Instability Analysis ◽  
Rectangular Channels ◽  
Relap5 Code

Capability of RELAP5 MOD3.3 code to simulate density wave instability in parallel narrow rectangular channels

2013 ◽  
Vol 60 ◽  
pp. 256-266 ◽  
Author(s):  
Yuan Zhou ◽  
Zhengming Zhang ◽  
Meng Lin ◽  
Dong Hou ◽  
Xiao Yan
Keyword(s):  
Density Wave ◽  
Wave Instability ◽  
Rectangular Channels

scholarly journals Mathematical modeling and numerical investigation of density wave instability of supercritical natural circulation loop

2021 ◽  
Vol 321 ◽  
pp. 04004
Author(s):  
Santosh Kumar Rai ◽  
Neha Ahlawat ◽  
Pardeep Kumar ◽  
Vinay Panwar
Keyword(s):  
Energy Conservation ◽  
Natural Circulation ◽  
Density Wave ◽  
Circulation Loop ◽  
Wave Instability ◽  
Conservation Equations ◽  
One Dimensional ◽  
Natural Circulation Loop ◽  
The One ◽  
Riser Height

In present paper, a mathematical model based on the one dimensional nonlinear mass, momentum and energy conservation equations has been developed to study the density wave instability (DWI) in horizontal heater and horizontal cooler supercritical water natural circulation loop (HHHC-SCWNCL). The one dimensional nonlinear mass, momentum and energy conservation equations are discretized by using finite difference method (FDM). The numerical model is validated with the benchmark results (NOLSTA model). Numerical simulations are performed to find the threshold stability zone (TSZ) and draw the stability map for natural circulation loop. Further, effect of change in diameter and riser height on the density wave instability of SCWNCL has been investigated.

Charge density wave instability in the quasi two-dimensional metal γ-Mo4011

1985 ◽  
Vol 54 (11) ◽  
pp. 909-912 ◽  
Author(s):  
H. Guyot ◽  
C. Schlenker ◽  
G. Fourcaudot ◽  
K. Konaté
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Two Dimensional ◽  
Wave Instability
Sign in / Sign up

Export Citation Format

Share Document