Towing Tank Experiments of Boundary Layer, Wake and Free Surface Flow Around a Naval Combatant

Abstract

Results from towing tank experiments regarding far field wave pattern and boundary layer and wake of the 2340 INSEAN model are presented. Wave elevations have been carried out at two Froude numbers namely Fr= 0.28 and Fr= b.41. Mean velocity field and total head in the boundary layer and wake have been measured by 5-hole Pitot probe at Fr = 0.28. The test design, measurement system and the uncertainty assessment have been described both for wave elevation and velocity fields. The uncertainty assessment methodology follows the AIAA Standard S-071-1995 [4]. The data contributes to the surface-ship resistance and . propulsion model-stale database for computational fluid dym1mics validation, as part of an international collaborative project between INSEAN, Iowa Institute of Hydraulic Research (IIHR) and David Taylor Model Basin (DTMB) on experimental and computational fluid dynamics and uncertainty assessment for a combatant geometry [1].