Experimental Study on Effect of A New Vortex Control Baffler and Its Influencing Factor

• Published in: China ocean engineering Vol. 25; no. 1; pp. 83 - 96
• Main Author: 刘志华 熊鹰 王展智 王松 涂程旭
• Format: Journal Article
• Language: English
• Published: Heidelberg Chinese Ocean Engineering Society 01.01.2011; Department of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China%China Jiliang University Hangzhou 310018,China
• Subjects: Coastal Sciences; Computational fluid dynamics; Discs; Disks; Engineering; Fluid flow; Fluid- and Aerodynamics; Marine; Marine & Freshwater Sciences; Mathematical models; Numerical and Computational Physics; Oceanography; Offshore Engineering; Simulation; Submarines; Vortices; Wakes; 安装位置; 影响因素; 流动特性; 涡控制; 潜艇模型; 非均匀性; 风洞实验; attached vortex; wind tunnel experiment; horseshoe vortex; submarine; vortex control baffler; vortex control baffler,horseshoe vortex
• ISSN: 0890-5487; 2191-8945
• DOI: 10.1007/s13344-011-0007-8

The horseshoe vortex generated around the sail-body junction of submarine has an important influence on the non-uniformity of submarine wake at propeller disc. The flow characteristics in the horseshoe vortex generated area are analyzed, and a new method of vortex control baffler is presented. The influence of vortex control baffler on the flow field around submarine main body with sail is numerically simulated. The wind tunnel experiment on submarine model is carried out, and it is proved that the vortex control baffler can weaken the hoi-seshoe vortex and decrease the non-uniformity of the wake at propeller disc. It is shown from the experiment results that the effect of vortex control baffler depends on its installation position; with a proper installation position, the non-uniform coefficient of submarine wake would be declined by about 50%; the Reynolds number of submarine model has an influence on the effect of vortex control baffler too, and the higher the Reynolds number is, the better the effect of the vortex control baffler is.