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Numerical streamline patterns at swimmer's surface using RANS equations.

Ahlem Arfaoui1, Catalin Viorel Popa, Redha Taïar

  • 1GRESPI/LTM, UFR Sciences Exactes et Naturelles, Reims, France.

Journal of Applied Biomechanics
|October 7, 2011
PubMed
Summary
This summary is machine-generated.

This study numerically models turbulent flow around a competitive female swimmer at 2.2 m/s using computational fluid dynamics (CFD). The simulation results for streamline patterns were validated through experimental methods.

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Area of Science:

  • Fluid dynamics
  • Sports science
  • Computational modeling

Background:

  • Understanding fluid dynamics is crucial for optimizing athletic performance in swimming.
  • The underwater phase is a critical component of competitive swimming velocity.

Purpose of the Study:

  • To numerically model the turbulent flow dynamics around a female swimmer during the underwater phase.
  • To simulate fluid dynamics at a velocity of 2.2 m/s, representing national swimming levels.
  • To validate computational fluid dynamics (CFD) simulation results with experimental data.

Main Methods:

  • Three-dimensional numerical simulations using the finite volume method.
  • The standard k-ω turbulence model was employed within ANSYS FLUENT software.
  • Experimental validation was conducted using the tufts method at the National Institute of Sports and Physical Education (INSEP).

Main Results:

  • The study generated detailed streamline patterns of the turbulent flow around the swimmer.
  • The Reynolds number for the simulation was 6.4 × 10^6, characteristic of high-level competitive swimming.
  • CFD simulations provided insights into the complex flow interactions during the underwater phase.

Conclusions:

  • Numerical modeling with CFD offers a viable method for analyzing swimming hydrodynamics.
  • The validated simulation provides a basis for understanding and potentially improving underwater swimming techniques.
  • This research contributes to the scientific understanding of fluid-body interactions in elite athletes.