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Study on the Characteristics of Rayleigh-Benard Convection With Viscoelastic Fluids

[+] Author Affiliations
Weihua Cai, Qin Ye, Jianping Chen, Hongna Zhang, Tongzhou Wei, Feng-chen Li

Harbin Institute of Technology, Harbin, China

Paper No. FEDSM2016-7638, pp. V01BT14A006; 6 pages
  • ASME 2016 Fluids Engineering Division Summer Meeting collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 1B, Symposia: Fluid Mechanics (Fundamental Issues and Perspectives; Industrial and Environmental Applications); Multiphase Flow and Systems (Multiscale Methods; Noninvasive Measurements; Numerical Methods; Heat Transfer; Performance); Transport Phenomena (Clean Energy; Mixing; Manufacturing and Materials Processing); Turbulent Flows — Issues and Perspectives; Algorithms and Applications for High Performance CFD Computation; Fluid Power; Fluid Dynamics of Wind Energy; Marine Hydrodynamics
  • Washington, DC, USA, July 10–14, 2016
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5029-9
  • Copyright © 2016 by ASME


In order to investigate the viscoelastic effect on classical thermal convective system-Rayleigh-Bénard convection (RBC), this paper uses direct numerical simulation to study the RBC system with viscoelastic fluid. By comparing the instantaneous velocity vector and temperature between Newtonian fluid and viscoelastic fluid cases, it is found that under certain conditions viscoelastic fluid has delayed the generation of RBC. Besides, the addition of viscoelastic fluid can enhance heat transfer based on Nusselt number and the heat transfer mechanism is interpreted based on the thickness of moment and temperature boundary layers.

Copyright © 2016 by ASME



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