Prediction of Auv’s Hydrodynamic Coefficients Using a Six DOF Balance System

Aymen Mohamed and Hedi Kchaou
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Hedi Kchaou: Department of Mechanical Engineering, National Engineering School of Sfax (ENIS), Tunisia

Oceanography & Fisheries Open Access Journal, 2019, vol. 10, issue 3, 91-100

Abstract: Hydrodynamic features of AUVS models are a main parameter must be identified in order to develop a suitable control system. CFD simulations with Ansys Fluent 17.0 enhanced with experimental tests are performed to AUV model with its different configurations with and without control surfaces. The submerged tests using a six-DOF balance system are carried out for a straight-line direction and a Reynolds number between 2.105 (v=0.2 m/s) and 106 (v=1 m/s). The numerical simulations to solve the Reynolds Averaged Navier-Stokes equations (RANSE) were developed basing on SST k-ω turbulence model in order to characterize the phenomenon of boundary layers separation The calculated hydrodynamic coefficients of both AUV models with and without control surfaces are revealed in good agreement with the measured ones from experimental tests. The effect of the strut arrangement on the flow behavior and the precision of the different results are discussed in detail. Flow separation and pressure distribution around the control surfaces are presented and studied properly.

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Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:adp:jofoaj:v:10:y:2019:i:3:p:91-100

DOI: 10.19080/OFOAJ.2019.10.555790

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