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Iranian Journal of Chemistry and Chemical Engineering، جلد ۴۴، شماره ۳، صفحات ۸۵۸-۸۶۹
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عنوان انگلیسی Numerical Simulation of the Behavior of Taylor Bubbles in Non-Newtonian Fluids Using OpenFOAM
چکیده انگلیسی مقاله Taylor bubbles are commonly utilized in a wide range of industrial applications involving non-Newtonian fluids, and a thorough understanding of the relevant knowledge is helpful to the design optimization of related industrial processes. This study investigated the behavior of Taylor bubbles in shear-thinning fluid using OpenFOAM. The numerical method is verified by comparing the results with experimental data, additionally, the effects of flow index n, surface tension σ, and zero shear rate viscosity μ0 on the motion behavior of Taylor bubbles were investigated. The results show that as the flow index n and zero shear viscosity μ0 increase, the terminal velocity of the Taylor bubbles decreases. The impact of various operating parameters on the bubble nose's form is insignificant. Regarding the liquid film surrounding the bubble, when n is small, the bubble rear is broken seriously, resulting in a shorter bubble and thinner liquid film. As the flow index n increases, the bubble elongates, and the liquid film becomes thicker, the length of the wake behind the Taylor bubble decreases. The surface tension mainly affects the bubble rear but has little impact on the bubble nose and rising velocity. For high μ0, the bubble rear does not break, and the shear thinning area is small.
کلیدواژه‌های انگلیسی مقاله Slug Flow,Taylor bubble,OpenFOAM,shear-thinning fluid,Carreau-Yasuda model
نویسندگان مقاله Yuhuan Ding |
College of Energy and Environment, Shenyang Aerospace University, Shenyang, 110136, P.R. CHINA

Wei Zhang |
College of Energy and Environment, Shenyang Aerospace University, Shenyang, 110136, P.R. CHINA

Meng-Qiang Duan |
College of Energy and Environment, Shenyang Aerospace University, Shenyang, 110136, P.R. CHINA

Shaobai Li |
Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission; Guangxi Key Laboratory of Chemistry and Engineering of Forest Products；Engineering Research Center of Low-carbon and High-quality Utilization of Forest Biomass, University of Guangxi, Nanning, 530006, P.R. CHINA

Caixia Li |
School of Energy and Constructional Engineering, Shandong Huayu University of Technology, Dezhou, 253034, P.R. CHINA

نشانی اینترنتی https://ijcce.ac.ir/article_719354_8295405b87938b4165b294121f8b6668.pdf
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