Implementation and Comparison of High-Resolution Spatial Discretization Schemes for Solving Two-Fluid Seven-Equation Two-Pressure Model
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Implementation and Comparison of High-Resolution Spatial Discretization Schemes for Solving Two-Fluid Seven-Equation Two-Pressure Model
- 发表刊物：
- Science and Technology of Nuclear Installations
- 摘要：
- 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. Te 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 semiimplicit algorithm based on the fnite volume method with staggered grids is developed to solve such advanced well-posed twopressure 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. Ten the semi-implicit algorithm with high-resolution
TVD schemes is validated on the water faucet test. Te 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
- 合写作者：
- Wu Pan, Chao Fei, Wu Dan, Shan Jianqiang, Gou Junli
- 卷号：
- 2017
- 页面范围：
- 1-14
- 是否译文：
- 否
- 发表时间：
- 2017-10-29