tritium transport
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2022 ◽  
Vol 175 ◽  
pp. 112996
Author(s):  
Miles O'Neal ◽  
Seok Bin Seo ◽  
G. Ivan Maldonado ◽  
Nicholas R. Brown

2021 ◽  
Vol 173 ◽  
pp. 112929
Author(s):  
Xueli Zhao ◽  
Lei Chen ◽  
Songlin Liu ◽  
Xin-Dong Pan ◽  
Xiao-Chun Li

2021 ◽  
Vol 167 ◽  
pp. 112334
Author(s):  
Luigi Candido ◽  
Ciro Alberghi ◽  
Fabio Moro ◽  
Simone Noce ◽  
Raffaella Testoni ◽  
...  

2021 ◽  
Vol 11 (8) ◽  
pp. 3481
Author(s):  
Volker Pasler ◽  
Frederik Arbeiter ◽  
Christine Klein ◽  
Dmitry Klimenko ◽  
Georg Schlindwein ◽  
...  

This work continues the development of a numerical model to simulate transient tritium transport on the breeder zone (BZ) level for the EU helium-cooled pebble bed (HCPB) concept for DEMO. The basis of the model is the open-source field operation and manipulation framework, OpenFOAM. The key output quantities of the model are the tritium concentration in the purge gas and in the coolant and the tritium inventory inside the BZ structure. New model features are briefly summarized. As a first relevant application a simulation of tritium transport for a single pin out of the KIT HCPB design for DEMO is presented. A variety of scenarios investigates the impact of the permeation regime (diffusion-limited vs. surface-limited), of an additional hydrogen content of 300 Pa H2 in the purge gas, of the released species (HT vs. T2), and of the choice of species-specific rate constants (recombination constant of HT set twice as for H2 and T2). The results indicate that the released species plays a minor role for permeation. Both permeation and inventory show a considerable dependence on a possible hydrogen addition in the purge gas. An enhanced HT recombination constant reduces steel T inventories and, in the diffusion-limited case, also permeation significantly. Scenarios with 80 bar vs. 2 bar purge gas pressure indicate that purge gas volumetric flow is decisive for permeation.


2020 ◽  
Vol 161 ◽  
pp. 112060
Author(s):  
Linzi Liu ◽  
Ruihai Tong ◽  
Jinguang Cai ◽  
Yong Yao ◽  
Jiangfeng Song ◽  
...  

2020 ◽  
Vol 160 ◽  
pp. 111963
Author(s):  
Xueli Zhao ◽  
Lei Chen ◽  
Xuebin Ma ◽  
Songlin Liu

2020 ◽  
Vol 160 ◽  
pp. 111996
Author(s):  
Ciro Alberghi ◽  
Luigi Candido ◽  
Raffaella Testoni ◽  
Marco Utili ◽  
Massimo Zucchetti

2020 ◽  
Vol 159 ◽  
pp. 111955
Author(s):  
Qin Zeng ◽  
Wei Shi ◽  
Xiande Wang ◽  
Hongli Chen

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