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TU Berlin

Inhalt des Dokuments

Gabriele Camerlengo (M.Sc.)

Lupe

gabriele.camerlengo@tu-berlin.de
+49 (0)30 314 27345 (Tel)
+49 (0)30 314 22638 (Fax)

Büro: VWS 113
Post: TU-Berlin, Sekr. MB1
Müller-Breslau-Straße 15
10623 Berlin

Forschung

Forschungsinteressen:

  • Kompressible Strömungen
  • Fluiddynamische Stabilität
  • Wärmeübergang bei erzwungener Konvektion
  • Turbulenzmodellierung
  • Numerische Mathematik

Projekte:

Wissenschaftliche Beiträge

DNS Study of Dust Particle Resuspension in a Fusion Reactor Induced by a Transonic Jet into Vacuum
Zitatschlüssel camerlengo2018dns
Autor Camerlengo, Gabriele and Borello, Domenico and Salvagni, Alessandro and Sesterhenn, Jörn
Seiten 247–267
Jahr 2018
ISSN 1573-1987
DOI 10.1007/s10494-017-9889-8
Journal Flow, Turbulence and Combustion
Jahrgang 101
Nummer 1
Monat Jul
Zusammenfassung This paper reports on a two-phase flow Direct Numerical Simulation (DNS) aimed at analyzing the resuspension of solid particles from a surface hit by a transonic jet inside a low pressure container. Conditions similar to those occurring in a fusion reactor vacuum vessel during a Loss of Vacuum Accident (LOVA) have been considered. Indeed, a deep understanding of the resuspension phenomenon is essential to make those reactors safe and suitable for a large-scale sustainable energy production. The jet Reynolds and Mach numbers are respectively set to 3300 and 1. The Thornton and Ning impact/adhesion model is adopted and improved. An advanced resuspension model, which takes into account the dynamics (rolling and slipping) of particles at the wall, is implemented. The use of this model combined with a DNS represents a great novelty in simulating the particle resuspension process. The particles initially deposited at the wall have constant density, whereas their diameters are drawn according to a log-normal distribution, with parameters obtained from experimental data. It has been found that the flow induced motion of wall deposited particles is highly linked with the instantaneous fluid structures and the resuspension phenomenon predominantly affects particles with the largest diameters. Moreover, the jet-deposit interaction is mostly confined within a circumference around the jet of radius approximately equal to the jet diameter.
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