Integrated approach to computational and experimental flow visualization of a double annular confined jet

The cold flow of a prototype industrial burner in a cylindrical combustion chamber is investigated. Two concentric annular axial jets simulate this complex flow field, which is investigated using Laser Sheet flow Visualization (LSV), Digital Particle Image Velocimetry (DPIV), Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics (CFD). The aim is to advance the physical understanding of combustion chamber flow fields and to assist the development of CFD codes specialized in such flows. These simulations generate large amount of data for various measured and calculated quantities. Thus, visualization and comparison procedures are applied for the validation of obtained results. The study reported here is one of the experiments applied in the design of the Quantitative Flow Field Visualization (QFView) software, a web-based environment which supports distributed data access. The application of QFView data analysis greatly improved the understandings about the various transition regions of the flow under investigation.