双流体模型中人工扩散的影响数值分析

海洋工程装备与技术 ›› 2015, Vol. 2 ›› Issue (1): 23-27.

• 海洋油气勘探开发技术与装备 • 上一篇下一篇

双流体模型中人工扩散的影响数值分析

韩朋飞¹, 郭烈锦^1,^*, 李清平², 姚海元², 程兵²

1. 西安交通大学动力工程多相流国家重点实验室,陕西西安 710049
2. 中海油研究总院,北京 100028

收稿日期:2014-12-29 出版日期:2015-02-20 发布日期:2016-03-31
通讯作者: 郭烈锦
作者简介:
作者简介:韩朋飞(1983--),男,博士研究生,主要从事气液两相流方面的研究.
基金资助:
国家科技重大专项(2011ZX05026-004-02),国家自然科学基金重点项目(51236007)

Numerical Analysis of the Effect of Artificial Diffusion Terms on Two-Fluid Model

Peng-fei HAN¹, Lie-jin GUO¹, Qing-ping LI², Hai-yuan YAO², Bing CHENG²

1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
2. CNOOC Research Institute, Beijing 100028, China

Received:2014-12-29 Online:2015-02-20 Published:2016-03-31

摘要/Abstract

摘要：

研究了双流体模型中加入人工扩散项后不同扩散项系数对模拟的影响.对于竖直管的Water Faucet问题,逐步增加人工扩散系数后非物理振荡完全消除.对于水平管流动病态区域的工况,不采用扩散系数在中等精细度网格上计算的结果同实验比较吻合,但无法得到网格无关解.采用Water Faucet问题确定的人工扩散系数进行计算,水动力学不稳定性被抑制,液塞频率被低估.因此,人工扩散的量随不同流动条件发生变化,需要具体确定.

关键词: 双流体模型, 人工扩散, 段塞流, 数值模拟

Abstract:

When artificial diffusion terms are introduced in two-fluid model, the effects of different artificial diffusion coefficients are studied. For vertical pipe Water Faucet problem, when the artificial diffusion coefficients are gradually increased, nonphysical oscillations can be eliminated. For horizontal pipe flow in ill-posed region, the calculated results without diffusion terms agree with experimental data but the mesh independent solution cannot be obtained. When the coefficients calibrated in Water Faucet problem are adopted, hydrodynamic instability is suppressed to some extent and slug frequency is underestimated. Therefore, the amount of artificial diffusion varies with different flow conditions and should be determined specially.

Key words: two-fluid model, artificial diffusion, slug flow, numerical simulation

中图分类号:

O359

韩朋飞, 郭烈锦, 李清平, 姚海元, 程兵. 双流体模型中人工扩散的影响数值分析[J]. 海洋工程装备与技术, 2015, 2(1): 23-27.

Peng-fei HAN, Lie-jin GUO, Qing-ping LI, Hai-yuan YAO, Bing CHENG. Numerical Analysis of the Effect of Artificial Diffusion Terms on Two-Fluid Model[J]. Ocean Engineering Equipment and Technology, 2015, 2(1): 23-27.

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参考文献 12

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双流体模型中人工扩散的影响数值分析

Numerical Analysis of the Effect of Artificial Diffusion Terms on Two-Fluid Model

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