HIDRODYNAMICS OF FISH SWIMMING IN QUASI-STEADY FLOW REGIME

  1. Antônio Augusto Nogueira Espenchitt 1
  2. Marianela Machuca Macias 1
  3. Taygoara Felamingo de Oliveira 1
  4. Antonio Cesar Pinho Brasil Junior 1
  1. 1 Universidade de Brasília
    info

    Universidade de Brasília

    Brasilia, Brasil

    ROR https://ror.org/02xfp8v59

Actas:
25th ABCM International Congress of Mechanical Engineering

Editorial: Associação Brasileira de Engenharia e Ciências Mecânicas

Año de publicación: 2019

Tipo: Aportación congreso

DOI: 10.26678/ABCM.COBEM2019.COB2019-0453 GOOGLE SCHOLAR

Resumen

This work presents an investigation of fish swimming using computational fluid dynamics with a quasi-steady flow approach. A tridimensional tuna motion model is analyzed for different time steps in an full swim cycle with this approach. Several geometries of the tuna fish were created based on a motion model, one for each time step. The parameters for each simulation were a steady flow condition and the k-ω turbulence model, using the ANSYSTM Fluent solver. The final results were components of the drag force (components of pressure field and friction) and for a full period oscillation of the fish’s tail and body and a time regression was made. These results were then compared to the values of the same conditions simulation and model found in previous paper regarding the same matter, but with a transient simulation approach