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Design and construction of a two-dimensional hydrodynamic tunnel to study the free motions of solids in a uniform flow

Abstract : Autonomous Underwater Vehicles (AUVs) are increasingly important tools for marine applications. A reasonably reliable prediction of their six degrees of freedom (6DOF) motions is essential. The manoeuvrability of these unmanned submarines relies on the capability to predict the hydrodynamic forces on a freely moving submerged body. Numerical simulators integrating the full physics of the problem have been developed but their validation remains the key issue. Three-dimensional calculations still take too much computing power to complete the very large number of simulations which is required for a full validation procedure. Furthermore, a very large pool with expensive measuring devices is also necessary to obtain experimental results. It was therefore decided to construct a 2D hydrodynamic tunnel in which an object can move with three degrees of freedom solely subjected to gravity and hydrodynamic forces. In the present paper, we describe the experimental device ensuring a simple and rapid implementation of trials: a 2D channel with a constant uniform flow. A general validation is considered with an ellipse. The experimental trajectories are compared with the corresponding analytical results and discussed at the end of the paper.
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https://hal.archives-ouvertes.fr/hal-01213438
Contributor : Nathalie Leal <>
Submitted on : Thursday, October 8, 2015 - 2:57:53 PM
Last modification on : Tuesday, February 2, 2021 - 9:52:02 AM

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France Floc'H, Steven Kerampran, Jean-Baptiste Leroux, Jean-Marc Laurens. Design and construction of a two-dimensional hydrodynamic tunnel to study the free motions of solids in a uniform flow. Flow Measurement and Instrumentation, Elsevier, 2015, 45, pp.18-27. ⟨10.1016/j.flowmeasinst.2015.04.009⟩. ⟨hal-01213438⟩

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