THERMAL IMAGING STUDY OF SCALAR TRANSPORT IN SHALLOW WAKES |
| |
| Authors: | CHONG K.J.Y UKTHUSYANTHAN N.I. LIANG Dong-fang TANG Hong-wu |
| |
| Affiliation: | [1]Department of Engineering,University of Cambridge,Cambridge [2]KW Ltd,Fetcham,Surrey,UK [3]College of Water Conservancy and I tydropowcr Engineering,, Hohai University, Nanjing 210098, China |
| |
| Abstract: | The thermal imaging technique relies on the usage of infrared signal to detect the temperature field.Using temperature as a flow tracer,thermography is used to investigate the scalar transport in the shallow-water wake generated by an emergent circular cylinder.Thermal imaging is demonstrated to be a good quantitative flow visualization technique for studying turbulent mixing phenomena in shallow waters.A key advantage of the thermal imaging method over other scalar measurement techniques,such as the Laser Induced Fluorescence(LIF)and Planar Concentration Analysis(PCA)methods,is that it involves a very simple experimental setup.The dispersion characteristics captured with this technique are found to be similar to past studies with traditional measurement techniques. |
| |
| Keywords: | environmental hydraulics shallow wake turbulent mixing thermal imaging vortex street |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
|
