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Optimal design of radioactive particle tracking experiments for flow mapping in opaque multiphase reactors
Shantanu Roy1, Faical Larachi, M H Al-Dahhan
1Chemical Reaction Engineering Laboratory, Department of Chemical Engineering, Washington University, St Louis, MO 63130-4899, USA.
Summary
This study introduces a method to improve the accuracy of radioactive particle tracking (RPT) for multiphase reactor flow mapping. It provides a scientific basis for selecting hardware and optimizing detector arrangements for enhanced hydrodynamic measurements.
Area of Science:
- Chemical Engineering
- Nuclear Engineering
- Fluid Dynamics
Background:
- Radioactive particle tracking (RPT) is a key non-invasive technique for multiphase reactor hydrodynamics.
- Current RPT hardware and detector configurations rely on experience, lacking a scientific basis for optimization.
- Tracer position reconstruction errors limit RPT accuracy and spatial resolution.
Purpose of the Study:
- To develop a theoretical framework for a priori assessment of RPT setup accuracy.
- To provide a scientific basis for selecting optimal hardware and detector configurations.
- To minimize tracer position errors for improved flow field measurements.
Main Methods:
- Theoretical modeling and simulation of RPT systems.
- Analysis of tracer position reconstruction error.
- Optimization of detector array configuration based on accuracy and cost.
Main Results:
- A method to predict RPT accuracy before experimentation was established.
- Demonstrated application of the method for hardware selection in a gas-solids riser.
- Identified optimal detector arrangements for maximizing accuracy within budget constraints.
Conclusions:
- A priori accuracy assessment enables informed RPT system design.
- Optimized hardware and detector configuration significantly improve flow mapping accuracy.
- This approach provides a scientific foundation for advancing RPT applications in chemical engineering.