Abstract
The present paper describes the elastic turbulent flow numerically generated in a parallel plate channel. On the basis of the numerical results, the characteristics of the velocity fields, the polymer elongations and the underlying interaction process were investigated to get insight into this phenomenon. It is indicated that increasing the Weissenberg number, the flow oscillations become stronger and further intermittent with larger-time-scale flow structures. The transversal velocity was generated in the form of quadrupolar patterns localized in the regions with strong polymers’ feedback. Besides, the elastic instability vortex-tube-like structures (regions dominated by rotating motion) are formed mainly surrounding the regions where the polymers are strongly deformed.
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Acknowledgment
The authors were grateful for the support of the Ministry of Education, Culture, Sports, Science and Technology of Japan via “Energy Science in the Age of Global Warming” of Global Center of Excellence (G-COE) program (J-051).
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Zhang, H.N., Kunugi, T., Li, F.C. (2013). Characteristics of Velocity Fields and Polymers’ Elongation in Elastic Turbulent Flow. In: Yao, T. (eds) Zero-Carbon Energy Kyoto 2012. Green Energy and Technology. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54264-3_30
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DOI: https://doi.org/10.1007/978-4-431-54264-3_30
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