呆木局部分离涡被动控制试验研究  

Experimental Investigation on Passive Control of Local Detached Vortex Structures Around Dead Wood

作　　者：曹彦涛 徐良浩 彭晓星[1,2] CAO Yantao;XU Lianghao;PENG Xiaoxing(National Key Laboratory on ship Vibration and Noise,CSSRC,Wuxi 214082,China;Taihu Laboratory of Deepsea Technological Science,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心船舶振动噪声重点实验室,无锡214082 [2]深海技术科学太湖实验室,无锡214082

出　　处：《中国造船》2024年第2期102-111,共10页Shipbuilding of China

基　　金：国家自然科学基金项目(11902295)。

摘　　要：针对呆木局部分离涡控制的需求,构建了具有典型呆木结构特征的简化船体模型,并提出了半圆形和三角形两种局部分离涡控制方案。在空泡水筒中试验观察原方案和加装两种形式控制单元后呆木局部分离涡的空化形态。结果显示:两种结构形式的控制单元对呆木局部分离涡均具有抑制效果,呆木分离涡的强度和向下游延伸的距离显著减小;在同样条件下,三角形控制单元的抑制效果更强。试验研究可为工程中有关控制方案的制定提供依据。Concentrated on the requirement of controlling local detached vortex structures from dead wood,a simplified ship body was designed to reflect the principal feature of the dead wood.Semi-circle and triangle control scheme were recommended.Flow features shown by cavitation for the two control schemes together with the original one were tested in a cavitation tunnel.It was revealed that both control schemes were available.Vortex strength and its influencing distance were suppressed significantly.In the same flow condition,the triangle scheme appeared predominance over the other and showed good potential in application.The results will provide support for the control scheme in the engineering.

关 键 词：呆木 局部分离涡 被动控制 试验研究 

分 类 号：TV131.32[水利工程—水力学及河流动力学]