实验流体力学2025，Vol.39Issue(4)：36-47,12.DOI:10.11729/syltlx20230015
基于MRV的多流程通道全场三维流动特性研究
Investigation on full field three-dimensional flow in a multi-pass channel based on magnetic resonance velocimetry
摘要
Abstract
Magnetic Resonance Velocimetry(MRV)has the unique advantage of rapidly measuring three-dimensional three-component(3D3C)velocity distributions in complex structures,meanwhile it doesn't need complex optical systems and tracer particles.MRV has become an important means for the study of full flow field.The full-field 3D velocity distribution in a three-pass serpentine channel was measured successfully.Results indicate that MRV has the ability to accurately resolve the complex 3D flow characteristics in the multi-pass channel.From the full-field 3D velocity distribution,it could be found that the flow near the bends has complex 3D features.The secondary flow is obvious on the cross-sections near the bends,which directs from the center of the channel to the upper and lower end walls.Dean vortices were observed in the right-angle bend,U-shaped bend and their downstream clearly.Flow driven by the Dean vortex directs to the upper and lower end walls,which is believed to be the essential reason for local heat transfer enhancement.关键词
核磁共振成像测速/三维流场测量/多流程通道/迪恩涡Key words
magnetic resonance velocimetry/3D flow field measurement/multi-pass channel/Dean vortex分类
航空航天引用本文复制引用
段敬添,王子瑞,张科,雷蒋,武俊梅..基于MRV的多流程通道全场三维流动特性研究[J].实验流体力学,2025,39(4):36-47,12.基金项目
国家科技重大专项(2017-III-0003-0027) （2017-III-0003-0027）
中核集团领创科研项目(J202210014-09) （J202210014-09）
