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<p>This study investigates vortex shedding and flow dynamics around elliptical cylinders with slits using numerical simulations. Two configurations, vertical and horizontal elliptical cylinders, were analyzed with varying slit orientations (vertical, horizontal, and combined) across Reynolds numbers (Re) ranging from 50 to 200. The computational analysis utilized Ansys Fluent 2023 R2 with a two-dimensional transient approach under laminar flow conditions. Key aerodynamic parameters, including pressure, velocity, vorticity, drag, and lift coefficients, were evaluated for different slit configurations. Results reveal that dual-slit configurations significantly reduce drag and mitigate vortex-induced turbulence, particularly at higher Re, compared to single-slit or slit-free designs. Additionally, slit orientation and spacing ratio critically influence wake dynamics and aerodynamic stability. The findings offer valuable insights into optimizing slit configurations for engineering applications requiring enhanced aerodynamic performance.</p>

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Numerical simulation of vortex shedding around an elliptical cylinder with slits

  • 期刊论文

  • 发表日期：

    2026年7月9日

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  • Mariyam Ali,
  • Abdur Rahim

摘要

This study investigates vortex shedding and flow dynamics around elliptical cylinders with slits using numerical simulations. Two configurations, vertical and horizontal elliptical cylinders, were analyzed with varying slit orientations (vertical, horizontal, and combined) across Reynolds numbers (Re) ranging from 50 to 200. The computational analysis utilized Ansys Fluent 2023 R2 with a two-dimensional transient approach under laminar flow conditions. Key aerodynamic parameters, including pressure, velocity, vorticity, drag, and lift coefficients, were evaluated for different slit configurations. Results reveal that dual-slit configurations significantly reduce drag and mitigate vortex-induced turbulence, particularly at higher Re, compared to single-slit or slit-free designs. Additionally, slit orientation and spacing ratio critically influence wake dynamics and aerodynamic stability. The findings offer valuable insights into optimizing slit configurations for engineering applications requiring enhanced aerodynamic performance.