Loading...
Search for:
oil-flow-visualization
0.005 seconds
Effect of vortex generators on hydrodynamic behavior of an underwater axisymmetric hull at high angles of attack
, Article Journal of Visualization ; Volume 20, Issue 3 , 2017 , Pages 559-579 ; 13438875 (ISSN) ; Hejranfar, K ; Farajollahi, A. H ; Sharif University of Technology
Springer Verlag
2017
Abstract
Abstract: Underwater vehicles when yawed to free stream flow, like submarines in a turning maneuver, produce large vortical separated regions. This vortical flow affects acoustic, body drag, control effectiveness and maneuverability. A suitable way to reduce the effects of this separated flow is to use vortex generators. The main goal of this study is to investigate the effect of the vortex generator on the flow field around a standard underwater model employing the vortex generators by using the oil flow visualization method in wind tunnel only in yaw direction (0° ≤ β ≤ 30° angles of attack, due to the experimental cost) and the CFD method in the pitch direction (0° ≤ α ≤ 30° angles of...