Extended-resolution of a single-camera synthetic Schlieren method for measurement of free liquid surfaces

doi:10.1016/j.expthermflusci.2023.110998

IMECH-IR > 非线性力学国家重点实验室

	Extended-resolution of a single-camera synthetic Schlieren method for measurement of free liquid surfaces
	Li HX(李慧鑫); Xu D(徐多)
发表期刊	EXPERIMENTAL THERMAL AND FLUID SCIENCE
	2023-11-01
卷号	149 页码:110998
ISSN	0894-1777
摘要	In a synthetic Schlieren method of measuring the height of a dynamic free liquid surface, the smallest wavelength of the measured surface topography is determined by the spatial resolution of the displacement field of markers. Currently, a displacement vector is obtained for each interrogation window, including few markers, with a cross-correlation algorithm. In this study, the measurement resolution is extended obtaining the displacement of individual markers. This simple and rational change, however, brings technical difficulties in numerically solving the governing equation over spatially randomly distributed markers. For this, the governing equation, which associates the surface height to be measured with the virtual displacements the markers, is solved by the finite-volume scheme for the unstructured meshes, where a marker locates the center of each triangular mesh face. The present method is examined with the synthetic generated data, in laboratory experiments of a transparent solid carved with a sinusoidal surface, and in experiments of water ripples. The measurement uncertainty is discussed.
关键词	Surface topography Height of free surface Synthetic Schlieren Single camera
DOI	10.1016/j.expthermflusci.2023.110998
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001037917200001
WOS研究方向	Thermodynamics ; Engineering ; Physics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Physics, Fluids & Plasmas
项目资助者	National Natural Science Foundation of China [11988102, 92152106]
论文分区	二类
力学所作者排名	1
RpAuthor	Xu, D (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/92577
专题	非线性力学国家重点实验室
作者单位	1.{Li, Huixin, Xu, Duo} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.{Xu, Duo} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li HX,Xu D. Extended-resolution of a single-camera synthetic Schlieren method for measurement of free liquid surfaces[J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE,2023,149:110998.
APA	李慧鑫,&徐多.(2023).Extended-resolution of a single-camera synthetic Schlieren method for measurement of free liquid surfaces.EXPERIMENTAL THERMAL AND FLUID SCIENCE,149,110998.
MLA	李慧鑫,et al."Extended-resolution of a single-camera synthetic Schlieren method for measurement of free liquid surfaces".EXPERIMENTAL THERMAL AND FLUID SCIENCE 149(2023):110998.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Jp2023Fa105.pdf（5608KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载