Experiments on the deposition and resuspension of nuclear aerosol particles


Experiments on the deposition and resuspension of nuclear aerosol particles

Barth, T.

In this presentation the state of the ongoing gas/graphite transport experiments is presented. In the frame of the EU projects THINS and ARCHER two small-scale test facilities were designed to study the particle transport in complex geometries. Background motivation is the carbonaceous dust issue in the primary circuit of the High Temperature Reactor. It is a safety issue to explore the deposition and resuspension behaviour of such graphite particles to assess the transport behaviour during loss of coolant accidents. The first facility is called Gas Particle Loop and it is used to study the particle deposition and resuspension behaviour in a turbulent square duct flow field. The turbulent flow field was recorded using a Particle Image Velocimetry system. Furthermore, single particle as well as multilayer particle deposition and resuspension experiments were conducted to generate a data basis for the understanding of the particle transport behaviour. The second facility is called Pebble Bed Loop was specially design to generate a particle laden turbulent flow through a pebble bed. The test section is designed to fit into a Positron Emission Tomography (PET) scanner situated at the Reactive Transport Division in Leipzig. The time and space resolved formation of the particles was recorded by means of this PET scanner. The data presented can be used for CFD code development.

Keywords: High Temperature Reactor; aerosol particle; deposition; resuspension; Particle Image Velocimetry; Positron Emission Tomography

  • Lecture (Conference)
    Doktorandenseminar KOMPOST, 08.12.2011, Zittau, Deutschland

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Publ.-Id: 17559