Extended-resolution of a single-camera synthetic Schlieren method for measurement of free liquid surfaces
文献类型：期刊论文
| 作者 | Li HX(李慧鑫); Xu D(徐多)
|
| 刊名 | EXPERIMENTAL THERMAL AND FLUID SCIENCE
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 149页码:110998 |
| ISSN号 | 0894-1777 |
| 关键词 | Surface topography Height of free surface Synthetic Schlieren Single camera |
| DOI | 10.1016/j.expthermflusci.2023.110998 |
| 英文摘要 | 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. |
| 分类号 | 二类 |
| WOS研究方向 | Thermodynamics ; Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001037917200001 |
| 资助机构 | National Natural Science Foundation of China [11988102, 92152106] |
| 其他责任者 | Xu, D (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92577]  |
| 专题 | 力学研究所_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. |
入库方式： OAI收割
来源：力学研究所
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