螺旋弓形夹套中对翼涡发生器的换热性能分析及结构参数优化  

Performance analysis and structural parameter optimization of contra wing vortex generator in spiral bow-shaped jacket

作　　者：王铝 李红军[1] WANG Lü;LI Hongjun(School of Mechanical Engineering and Automation,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学机械与自动控制学院,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2023年第1期104-114,共11页Journal of Zhejiang Sci-Tech University(Natural Sciences)

摘　　要：为进行对翼涡发生器性能及结构参数优化研究,建立横截面圆心角度数为120°的螺旋弓形管夹套模型,通过数值模拟方法对分别安装有三角型对翼涡发生器(Delta contra wing vortex generator, DWP)、矩形对翼涡发生器(Rectangular contra wing vortex generator, RWP)和流线型对翼涡发生器(Streamlined contra wing vortex generator, SWP)的3种螺旋弓形夹套和未安装涡发生器的螺旋弓形夹套进行了对比研究。首先对安装有对翼涡发生器的夹套的强化换热机理进行分析,通过强化换热和阻力特性对比,利用综合评价因子评估了3种涡发生器的综合性能;其次对综合性能最好的三角型涡发生器的结构参数进行优化。结果表明:在圆心角度数为120°的螺旋弓形管夹套中,三角型涡发生器提高的换热效果最好,安装三角型和流线型涡发生器的螺旋弓形夹套具有更好的应用性;通过正交试验优化后的三角型对翼涡发生器最佳长度为32 mm、高度为8 mm、间距为40 mm,来流端展开角度为120°。研究结果可为实际工程中涡发生器的设计与选用提供一定的依据。In order to optimize the performance and structural parameters of the contra wing vortex generator, the spiral bow-shaped jacket model with a cross-section center angle of 120° was established, and three kinds of spiral bow-shaped jackets respectively installed with delta contra wing vortex generator(DWP), rectangular contra wing vortex generator(RWP) and streamlined contra wing vortex generator(SWP) were compared with those without vortex generator by numerical simulation. Firstly, the heat transfer enhancement mechanism of the jacket with a contra wing vortex generator was analyzed. By comparing the heat transfer enhancement and resistance characteristics, the comprehensive performance of the three vortex generators was evaluated by using comprehensive evaluation factors. Then, the structural parameters of the triangular vortex generator with the best comprehensive performance were optimized. The results show that among the spiral bow-shaped jackets with a center angle of 120°, the triangular vortex generator has the best heat transfer effect, and the spiral bow-shaped jacket with a triangular or a streamlined vortex generator has better industrial application;the optimum length, height and spacing of the triangular contra wing vortex generator optimized by orthogonal test are 32 mm, 8 mm and 40 mm, respectively, and the expansion angle of the inlet end is 120°. The results provide a certain basis for selection and design of vortex generators in the actual engineering.

关 键 词：弓形管夹套 涡发生器 强化换热 综合评价 正交优化 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]