Flow field analysis of columnar vortex
This report reviews the flow visualization and Particle Image Velocimetry (PIV) experiments and analysis done by researchers to demonstrate the vortex breakdown phenomenon. Various theories regarding vortex breakdown phenomenon are also explained. Flow visualization was performed in order to stud...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
2009
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/17313 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | This report reviews the flow visualization and Particle Image Velocimetry (PIV)
experiments and analysis done by researchers to demonstrate the vortex breakdown
phenomenon. Various theories regarding vortex breakdown phenomenon are also
explained. Flow visualization was performed in order to study the key characteristics
of the spiral-type vortex breakdown. The main qualitative analysis came from
Particle Image Velocimetry (PIV) in an attempt to capture the vortex breakdown
process in the flow within a confined circular pipe. The 2-D velocity fields were
projected on the PIV images to show the occurrence of flow divergence and
recirculation zones. The vorticity fields were also created to support the analysis. A
comparison between observations from both flow visualization and PIV experiments
was also performed. |
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