Experimental flow pattern and friction factor of oscillatory flows in a baffled tube

  1. J. Muñoz Cámara 1
  2. Crespí LLorens 1
  3. J.P. Solano 1
  4. J. Pérez García 1
  5. P.G. Vicente 1
  6. A. Viedma 1
  1. 1 Universidad Politécnica de Cartagena
    info

    Universidad Politécnica de Cartagena

    Cartagena, España

    ROR https://ror.org/02k5kx966

Actas:
1 st Spanish Fluid Mechanics Conference: Cádiz, del 19 al 22 de junio de 2022

Año de publicación: 2022

Tipo: Aportación congreso

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Resumen

Experimental results of flow pattern in a circular-orifice baffled tube under pure oscillatory flowconditions are presented, using the hydrogen bubble visualization technique. The existence of acentral jet and the cyclic dispersion of vortices upstream and downstream of the baffles is analyzed.Pressure drop experiments are conducted in a hydraulic test-rig using four different fast timeresponse pressure transducers, covering different fluid viscosities (propylene glycol-water mixtures)and oscillating amplitudes. The results are analyzed in the proper dimensionless form by means ofthe oscillatory Fanning friction factor, which provides consistent results for the different workingfluids and operational conditions for 10 < Reosc < 1000.