| 超临界水并联通道流动不稳定性理论研究 |
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| 引用本文： | 冯健,田文喜,巫英伟,田晓燕,秋穗正,苏光辉.超临界水并联通道流动不稳定性理论研究[J].原子能科学技术,2012,46(4):404-409. |
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| 作者姓名： | 冯健 田文喜 巫英伟 田晓燕 秋穗正 苏光辉 |
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| 作者单位： | 西安交通大学 ;核能科学与技术学院，陕西 ;西安710049 |
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| 摘 要： | 根据并联通道的结构特点，建立了合理的数学物理模型，采用半隐式差分和交错网格技术对超临界水并联通道中的流动传热进行了数值模拟。运用小扰动法验证了超临界水密度波型流动不稳定的发生，并计算了流量、入口温度、入口压力对其流动不稳定性发生边界的影响。并联通道系统的稳定性随入口压力和入口流量的增大而增强，随入口温度的增大而减弱。
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| 关 键 词： | 超临界水 半隐式差分 交错网格 流动不稳定性 |
Theoretical Study on Flow Instability of Supercritical Water in Parallel Channels |
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| FENG Jian
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TIAN Wen-xi
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WU Ying-wei
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TIAN Xiao-yan
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QIUSui-zheng
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SU Guang-hui.Theoretical Study on Flow Instability of Supercritical Water in Parallel Channels[J].Atomic Energy Science and Technology,2012,46(4):404-409. |
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| Authors: | FENG Jian TIAN Wen-xi WU Ying-wei TIAN Xiao-yan QIUSui-zheng SU Guang-hui |
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| Affiliation: | School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China |
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| Abstract: | Based on the structure characteristics of parallel channels,mathematical and physical models were established to simulate flow and heat transfer of the supercritical water in the parallel channels with semi-implicit method and staggered mesh method.Flow instability of supercritical water was obtained by using little perturbation method.The effects of mass flow,inlet temperature and inlet pressure on the flow instability boundary were also investigated.The stability of the parallel channels increases with inlet pressure and inlet flow,and decreases with the increase of inlet temperature. |
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| Keywords: | supercritical water semi-implicit method staggered mesh flow instability |
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