Implementation and Comparison of High-Resolution Spatial Discretization Schemes for Solving Two-Fluid Seven-Equation Two-Pressure Model
Joint Authors
Gou, Junli
Shan, Jianqiang
Wu, Pan
Chao, Fei
Wu, Dan
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-29
Country of Publication
Egypt
No. of Pages
14
Abstract EN
As compared to the two-fluid single-pressure model, the two-fluid seven-equation two-pressure model has been proved to be unconditionally well-posed in all situations, thus existing with a wide range of industrial applications.
The classical 1st-order upwind scheme is widely used in existing nuclear system analysis codes such as RELAP5, CATHARE, and TRACE.
However, the 1st-order upwind scheme possesses issues of serious numerical diffusion and high truncation error, thus giving rise to the challenge of accurately modeling many nuclear thermal-hydraulics problems such as long term transients.
In this paper, a semi-implicit algorithm based on the finite volume method with staggered grids is developed to solve such advanced well-posed two-pressure model.
To overcome the challenge from 1st-order upwind scheme, eight high-resolution total variation diminishing (TVD) schemes are implemented in such algorithm to improve spatial accuracy.
Then the semi-implicit algorithm with high-resolution TVD schemes is validated on the water faucet test.
The numerical results show that the high-resolution semi-implicit algorithm is robust in solving the two-pressure two-fluid two-phase flow model; Superbee scheme and Koren scheme give two highest levels of accuracy while Minmod scheme is the worst one among the eight TVD schemes.
American Psychological Association (APA)
Wu, Pan& Chao, Fei& Wu, Dan& Shan, Jianqiang& Gou, Junli. 2017. Implementation and Comparison of High-Resolution Spatial Discretization Schemes for Solving Two-Fluid Seven-Equation Two-Pressure Model. Science and Technology of Nuclear Installations،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1203684
Modern Language Association (MLA)
Wu, Pan…[et al.]. Implementation and Comparison of High-Resolution Spatial Discretization Schemes for Solving Two-Fluid Seven-Equation Two-Pressure Model. Science and Technology of Nuclear Installations No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1203684
American Medical Association (AMA)
Wu, Pan& Chao, Fei& Wu, Dan& Shan, Jianqiang& Gou, Junli. Implementation and Comparison of High-Resolution Spatial Discretization Schemes for Solving Two-Fluid Seven-Equation Two-Pressure Model. Science and Technology of Nuclear Installations. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1203684
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1203684