Author(s): Praveen Rathod, Vivek L. Manekar

Linked Author(s): Praveen Rathod

Keywords: Flow structure interaction, phase thresholding, ANSYS FLUENT, turbulence characteristics, Acoustic Doppler Velocity meter (ADV)

Abstract:

Experimental and numerical simulations were carried out to study the suitability of widely used numerical models for the flow structure interaction problem in context of turbulence characteristics around cylindrical bridge pier. Present study mainly concentrates on the comparative study between the results obtained from experimental and numerical determination of turbulence characteristics. To capture the continuous point velocity data during the experimentation, Acoustic Doppler Velocity meter (ADV) was used. Pre and post processing treatment was done for the Acoustic Doppler Velocity meter (ADV) data used in the determination of turbulence characteristics around the bridge piers by phase thresholding Method. The obtained results were compared with the numerical simulations carried out using the ANSYS FLUENT computing tool. The turbulence characteristics across the depth of the flow were quantified by measuring the vertical distribution of time averaged velocity and Turbulence kinetic energy. The same experimental setup and flow conditions were simulated in the ANSYS FLUENT with k-ɛ model and same turbulence characteristics were commutated after extracting the velocity magnitude in XY plane. It has been concluded that the results obtained from k-ɛ model are in good agreement with the experimental results. (2636, 56, 260)

DOI:

Year: 2017