跳至主要内容

Validation of RELAP5/MOD3.2 Code for Flashing-Induced Instabilities in a Single Channel

Read  full  paper  at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52987#.VK86BMnQrzE

ABSTRACT
This paper reports on the modeling and simulation of flashing-induced instabilities in naturalcirculation systems, with special emphasis on simplified boiling water reactors (SBWRs). In this work, flashing-induced oscillations have been studied by using an experimental test facility (SIRIUS-N) and RELAP5/MOD3.2 thermal hydraulic code. The behavior of the test facility is investigated for different values of core inlet temperature value. The results of the simulations have been compared qualitatively and quantitatively with experiments. In general, deviations are found between the numerical and experimental results, in spite of the close similarity between the SIRIUS-N facility and the definition of the system in the RELAP code. This result indicates that predictions regarding experimental facility, based on modeled system, should be carefully considered.
 
Cite this paper
Atajafari, H. , Nematollahi, M. , Hashemi-Tilehnoee, M. and Rafiee, N. (2015) Validation of RELAP5/MOD3.2 Code for Flashing-Induced Instabilities in a Single Channel. World Journal of Nuclear Science and Technology, 5, 6-17. doi: 10.4236/wjnst.2015.51002.
 
References
[1]Inada, F., Furuya, M. and Yasuo, A. (2000) Thermo-Hydraulic Instability of Boiling Natural Circulation Loop Induced by Flashing (Analytical Consideration). Nuclear Engineering and Design, 200, 187-199.
http://dx.doi.org/10.1016/S0029-5493(99)00334-9
 
[2]De Kruijf, W.J.M., Van der Hagen, T.H.J.J. and Mudde, R.F. (1999) CIRCUS, a Natural Circulation Two-Phase Flow Facility. Proceeding of the Eurotherm Seminar No. 63.
 
[3]Van Bragt, D.D.B., De Kruijf, W.J.M., Manera, A., Van Der Hagen, T.H.J.J. and Van Dam, H. (2002) Analytical Modeling of Flashing-Induced Instabilities in a Natural Circulation Cooled Boiling Water Reactor. Nuclear Engineering and Design, 215, 87-98.
http://dx.doi.org/10.1016/S0029-5493(02)00043-2
 
[4]Furuya, M., Inada, F. and Van der Hagen, T.H.J.J. (2005) Flashing-Induced Density Wave Oscillations in a Natural Circulation BWR—Mechanism of Instability and Stability Map. Nuclear Engineering and Design, 235, 1557-1559.
http://dx.doi.org/10.1016/j.nucengdes.2005.01.006                                                                 eww150109lx
 
[5]Andersen, J.G.M., Inada, F. and Klebanov, L.A. (1995) TRACG Analyses of Flashing Instability during Start-Up. Proceedings of the 3rd International Conference on Nuclear Engineering ICONE-3, Kyoto, 23-27 April 1995.
 
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文