Dual emission LIF technique for pH and concentration field measurement around a rising bubble
| Autor: | Kay A. Buist, Eajf Frank Peters, Jam Hans Kuipers, Gaopan Kong |
|---|---|
| Přispěvatelé: | Multi-scale Modelling of Multi-phase Flows |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Field (physics) General Chemical Engineering Bubble Aerospace Engineering 02 engineering and technology Computational fluid dynamics Wake 01 natural sciences 010305 fluids & plasmas Laser induced fluorescence Mass transfer 0103 physical sciences Mass concentration (chemistry) Laser-induced fluorescence Dual emmision Fluid Flow and Transfer Processes business.industry Mechanical Engineering Mechanics Chemical reactor 021001 nanoscience & nanotechnology Gas-liquid mass transfer Nuclear Energy and Engineering Species concentration 0210 nano-technology business |
| Zdroj: | Experimental Thermal and Fluid Science, 93, 186-194. Elsevier |
| ISSN: | 0894-1777 |
| Popis: | Mass transfer plays an important role in chemical engineering applications involving multiphase systems. Several techniques have been developed in the field to measure the global mass concentration in multiphase chemical reactors. However, because of the complexity of multiphase processes, only few techniques are able to provide local and quantitative information. In this study a dual-emission Laser Induced Fluorescent technique (LIF) has been developed to locally measure the mass transfer of a rising CO 2 bubble in a quiescent fluid. Details of the pH field with an overall precision of ± 0.04 pH units, dissolved CO 2 concentration, and the mass transfer evolution in the bubble wake can now be measured quantitatively. It is capable to provide quantitative comparison with simulation results and as such experimental validation of multiphase CFD models. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect