| Extended-resolution of a single-camera synthetic Schlieren method for measurement of free liquid surfaces | |
Li HX(李慧鑫); Xu D(徐多)
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| Source Publication | EXPERIMENTAL THERMAL AND FLUID SCIENCE
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| 2023-11-01 | |
| Volume | 149Pages:110998 |
| ISSN | 0894-1777 |
| Abstract | 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. |
| Keyword | Surface topography Height of free surface Synthetic Schlieren Single camera |
| DOI | 10.1016/j.expthermflusci.2023.110998 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001037917200001 |
| WOS Research Area | Thermodynamics ; Engineering ; Physics |
| WOS Subject | Thermodynamics ; Engineering, Mechanical ; Physics, Fluids & Plasmas |
| Funding Organization | National Natural Science Foundation of China [11988102, 92152106] |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Xu, D (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92577 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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.Rp_Au:Xu, D (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 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. |
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| Jp2023Fa105.pdf（5608KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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