Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nucleation, growth and transport modelling of helium bubbles under
  nuclear irradiation in lead-lithium with the Self-consistent nucleation
  theory and surface tension corrections   Helium (He) nucleation in liquid metal breeding blankets of a DT fusion
reactor may have a significant impact regarding system design, safety and
operation. Large He production rates are expected due to tritium (T) fuel
self-sufficiency requirement, as both, He and T, are produced at the same rate.
Low He solubility, local high concentrations, radiation damage and fluid
discontinuities, among other phenomena, may yield the necessary conditions for
He nucleation. Hence, He nucleation may have a significant impact on T
inventory and may lower the T breeding ratio.
  A model based on the self-consistent nucleation theory (SCT) with a surface
tension curvature correction model has been implemented in OpenFoam(r) CFD
code. A modification through a single parameter of the necessary nucleation
condition is proposed in order to take into account all the nucleation
triggering phenomena, specially radiation induced nucleation. Moreover, the
kinetic growth model has been adapted so as to allow for the transition from a
critical cluster to a macroscopic bubble with a diffusion growth process.
  Limitations and capabilities of the models are shown by means of
zero-dimensional simulations and sensitivity analyses to key parameters under
HCLL breeding unit conditions. Results provide a good qualitative insight into
the helium nucleation phenomenon in LM systems for fusion technology and
reinforces the idea that nucleation may not be a remote phenomenon, may have a
large impact on the system's design and reveals the necessity to conduct
experiments on He cavitation.

31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th