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The current study demonstrates a detailed analysis of heat transfer enhancement characteristics of a viscoelastic fluid using the finite volume method (FVM) based Open-source computational fluid dynamics (CFD) code OpenFOAM, from a heated circular cylinder immersed in it. The Oldroyd-B viscoelastic consecutive equation models the fluid to study the constant-shear viscosity effect of viscoelastic fluid on flow dynamics. The numerical simulations were carried out over a range of dimensionless numbers, Weissenberg number (0 ≤ Wi ≤ 100), while maintaining fixed values for Reynolds (Re = 5 and 100), Prandtl numbers (Pr = 0.7), and polymer viscosity ratio (ß = 0.5). The results illustrate that at a high Weissenberg number, elastic turbulence arises in the systems, significantly altering the flow behavior and, thus, the heat transfer characteristics of the system. While the current study focuses on a simplified system, its findings can prove valuable in designing process equipment to enhance the heat transfer rate.

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Numerical Simulation and Flow Modeling of Viscoelastic Fluid for Heat Transfer Enhancement Applications

  • 会议论文

  • 发表日期：

    2025年

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  • Chinmay Mathur,
  • Chandi Sasmal,
  • Pravin Kodgire

摘要

The current study demonstrates a detailed analysis of heat transfer enhancement characteristics of a viscoelastic fluid using the finite volume method (FVM) based Open-source computational fluid dynamics (CFD) code OpenFOAM, from a heated circular cylinder immersed in it. The Oldroyd-B viscoelastic consecutive equation models the fluid to study the constant-shear viscosity effect of viscoelastic fluid on flow dynamics. The numerical simulations were carried out over a range of dimensionless numbers, Weissenberg number (0 ≤ Wi ≤ 100), while maintaining fixed values for Reynolds (Re = 5 and 100), Prandtl numbers (Pr = 0.7), and polymer viscosity ratio (ß = 0.5). The results illustrate that at a high Weissenberg number, elastic turbulence arises in the systems, significantly altering the flow behavior and, thus, the heat transfer characteristics of the system. While the current study focuses on a simplified system, its findings can prove valuable in designing process equipment to enhance the heat transfer rate.