干旱区生态环境知识资源中心(Arid): Light field enhancement of particle image velocimetry measurement using a profiled window and a ray tracing method

Arid

DOI	10.1016/j.expthermflusci.2019.04.024
	Light field enhancement of particle image velocimetry measurement using a profiled window and a ray tracing method
	Ma, Hongyu ; Wang, Peng ; Liu, Yingzheng 1; Wen, Xin
通讯作者	Liu, Yingzheng
来源期刊	EXPERIMENTAL THERMAL AND FLUID SCIENCE
ISSN	0894-1777
EISSN	1879-2286
出版年	2019
卷号	106 页码:25-37
英文摘要	A light field enhancement approach using a profiled window and a ray tracing method was developed to eliminate optical shadowed regions in particle image velocimetry measurements. In this approach, the profiled window was particularly designed to optimize the global illumination of tracer particles; the ray tracing method was employed to predict the illumination intensity of the light field and optimize geometry of the profiled window. To this end, two representative configurations featured by annoying optical shadows, including the internal intersection flow and external cylinder flow, were selected for demonstration. Preliminary measurements agreed with ray tracing analysis of the existing shadows; for the internal intersection flow and cylinder flow, a bi-arc window arid a parallel bi-elliptic window were respectively proposed to guide the light sheet to illuminate the otherwise shadowed region. Finally, these two flows with profiled windows embedded in experimental configurations were measured, clearly capturing the unsteady vortex structures. The proposed light field enhancement approach along with high-precision machining and polishing techniques comprise a sophisticated strategy to eliminate optical shadows in particle image velocimetry measurements.
英文关键词	Light field enhancement Profiled window Ray tracing method Optical shadowed region PIV measurements
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000471733400003
WOS关键词	INDUCED ACOUSTIC-RESONANCE ; CIRCULAR-CYLINDER ; VISCOUS-FLOW ; WAKE
WOS类目	Thermodynamics ; Engineering, Mechanical ; Physics, Fluids & Plasmas
WOS研究方向	Thermodynamics ; Engineering ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215616
作者单位	1.Shanghai Jiao Tong Univ, Educ Minist Power Machinery & Engn, Sch Mech Engn, Key Lab, 800 Dongchuan Rd, Shanghai 200240, Peoples R China; 2.Shanghai Jiao Tong Univ, Gas Turbine Res Inst, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Ma, Hongyu,Wang, Peng,Liu, Yingzheng,et al. Light field enhancement of particle image velocimetry measurement using a profiled window and a ray tracing method[J],2019,106:25-37.
APA	Ma, Hongyu,Wang, Peng,Liu, Yingzheng,&Wen, Xin.(2019).Light field enhancement of particle image velocimetry measurement using a profiled window and a ray tracing method.EXPERIMENTAL THERMAL AND FLUID SCIENCE,106,25-37.
MLA	Ma, Hongyu,et al."Light field enhancement of particle image velocimetry measurement using a profiled window and a ray tracing method".EXPERIMENTAL THERMAL AND FLUID SCIENCE 106(2019):25-37.