Flow visualization technique for natural environment
- Keywords： PIV, Geometric conversion
- Field： Civil engineering, Social safety system science
Outline：
- Background
- Natural environment changes in various time scales. The flooding in a river is one of environmental changes related to water resources management and natural disaster. The spatial scale of flooding flow is large so measuring the time-series change of the flow rate during the flooding has difficulties in instrumentation, expense, set up time and so on.
- Research Summary
- Measurement technique of the flow using the video images in natural environment was developed. Selection of camera, determination of a shooting angle, requirement for video storage format and system, geometric conversion and analysis of the measured result were comprehensively designed. As a result, stable and continuous measurement of flow in natural environment was achieved.
- Result
- The time change of a flood flow was measured in this research.
- Application
- The developed method is applicable for not only the surface flow velocity of a river but in various flow in the natural environment.
- Competitive Advantages
- The visualization technique using the camera system has predominancy in small installation and operation costs and high stability and accuracy of measurement in comparison with other measurement technology.
Related paper published
- PIV (Particle Image Velocimetry)
