Fluid Flow and Effect of Turbulence Model on Large-Sized Triple-Offset Butterfly Valve

IF 1.1 4区工程技术 Q4 MECHANICS

Journal of Applied Fluid Mechanics Pub Date : 2023-12-01 DOI:10.47176/jafm.16.12.2028

M. S. Kim, H. S. Seong, J. H. Yang, S. W. Lee, S. W. Choi

引用次数: 0

Abstract

The performance a valve has been frequently estimated with numerical methods owing to limitations such as cost and place. In this study, for the triple-offset butterfly valves, the different sizes in various disc-opening cases was numerically conducted using different turbulence models of the two-equation turbulence models of k–ε, k-ω, and Reynolds stress model. The numerical calculations were validated against experimentally obtained valve flow test results. The numerical effect with the different turbulence models were analyzed with respect to the disc-opening cases. From the numerical analysis, the Reynolds stress model exhibits the most pronounced turbulence effects among the various turbulence models showing higher value of Reynolds normal stress near the valve disc region. The sensitivity of the turbulence model constants was examined using the 300 mm valve to observe the sensitivity of the turbulence model parameters in the two-equation turbulence models.

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大型三偏角蝶阀的流体流动及湍流模型的影响

由于成本和地点的限制，阀门的性能通常用数值方法来估计。本文针对三偏置蝶阀，采用k -ε、k-ω两方程湍流模型和Reynolds应力模型，对不同开度情况下的不同通径进行了数值模拟。数值计算与实验得到的阀门流量测试结果进行了验证。分析了不同湍流模型对阀瓣打开情况下的数值影响。从数值分析来看，在各种湍流模型中，雷诺数应力模型表现出最明显的湍流效应，在阀瓣附近的雷诺数法向应力值较高。利用300 mm气阀检测湍流模型常数的敏感性，观察两方程湍流模型中湍流模型参数的敏感性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Fluid Mechanics THERMODYNAMICS-MECHANICS

CiteScore

2.00

自引率

20.00%

发文量

138

审稿时长

>12 weeks

期刊介绍： The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating. The motivation for this new fluid mechanics journal is driven by the following points: (1) there is a need to have an e-journal accessible to all fluid mechanics researchers, (2) scientists from third- world countries need a venue that does not incur publication costs, (3) quality papers deserve rapid and fast publication through an efficient peer review process, and (4) an outlet is needed for rapid dissemination of fluid mechanics conferences held in Asian countries. Pertaining to this latter point, there presently exist some excellent conferences devoted to the promotion of fluid mechanics in the region such as the Asian Congress of Fluid Mechanics which began in 1980 and nominally takes place in one of the Asian countries every two years. We hope that the proposed journal provides and additional impetus for promoting applied fluids research and associated activities in this continent. The journal is under the umbrella of the Physics Society of Iran with the collaboration of Isfahan University of Technology (IUT) .