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Wake Shape and Height Profile Measurements in a Concave Open Channel Flow Regarding the Target in DONES

Brenneis, Björn; Gordeev, Sergej; Ruck, Sebastian; Stoppel, Leonid; Hering, Wolfgang

Abstract:
Wakes appearing downstream of disturbances on the surface of a water flow in a concave open channel were examined experimentally. The investigated channel geometry was similar to the liquid lithium target in DONES (Demonstration fusion power plant Oriented NEutron Source). The objective of the measurements was to analyze the effect of a disturbance on the downstream layer thickness. For measuring the height profiles in the channel, an optical measurement system based on laser triangulation was developed. It was shown that the wake of the undisturbed flow emerged from the nozzle corner, which was in accordance with analytical solutions. For sufficiently large disturbances at the nozzle edge, the height profiles located downstream showed symmetrical minima and maxima on both sides of the disturbance. The wake depth strongly depended on the diameter and penetration depth of the disturbance, as well as the circumferential position in the channel, which yields to a critical wake depth of one millimeter for the lithium target in DONES.


Verlagsausgabe §
DOI: 10.5445/IR/1000138987
Veröffentlicht am 14.10.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Neutronenphysik und Reaktortechnik (INR)
Institut für Thermische Energietechnik und Sicherheit (ITES)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000138987
HGF-Programm 31.13.05 (POF IV, LK 01) Neutron-Resistant Structural Materials
Weitere HGF-Programme 38.04.03 (POF IV, LK 01) Thermal Energy Storage
Erschienen in Energies
Verlag MDPI
Band 14
Heft 20
Seiten Art.-Nr.: 6506
Vorab online veröffentlicht am 11.10.2021
Schlagwörter wakes; open channel flow; experimental methods; DONES
Nachgewiesen in Web of Science
Scopus
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